Skip over navigation
Main CPC Sections USPC Class Numbers & Titles USPC Class Numbers Classification Search Page Contacts Help
Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC)
Printable version [PDF]
CPC
COOPERATIVE PATENT CLASSIFICATION
Collapse
G01N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (separating components of materials in general B01D, B01J, B03, B07; apparatus fully provided for in a single other subclass, see the relevant subclass e.g. B01L; measuring or testing processes other than immunoassay, involving enzymes or micro-organisms C12M, C12Q; investigation of foundation soil in situ E02D 1/00; sensing humidity changes for compensating measurements of other variables or for compensating readings of instruments for variations in humidity, see G01D or the relevant subclass for the variable measured; testing or determining the properties of structures G01M; measuring or investigating electric or magnetic properties of materials G01R; systems or methods in general, using reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; determining sensivity, graininess, or density of photographic materials G03C 5/02; testing component parts of nuclear reactors G21C 17/00;
{
controlling or regulating non-electric variables G05D; measuring degree of ionisation of ionised gases, i.e. plasma H05H 1/0006; testing electrographic developer properties G03G 15/0848
}
)
NOTE
-
In this subclass, the following terms are used with the meanings indicated :
- "investigating" means testing or determining;
- "materials" includes solid, liquid or gaseous media, e.g. the atmosphere.

Attention is drawn to the Notes following the title of class G01.

Inventions relating to investigating the properties of materials, specially adapted for use in processes covered by subclass B23K, are classified in group B23K 31/12.

Collapse
G01N 1/00
Sampling; Preparing specimens for investigation
Collapse
G01N 1/02
.
Devices for withdrawing samples (for medical or veterinary purposes A61;
{
sampling of foundation soil E02D 1/04
}
; obtaining samples of soil or well fluids E21B 49/00;
{
collecting or conveying radioactive samples G01T 7/00, e.g. G01T 7/02, G01T 7/08
}
)
Collapse
G01N 1/04
. .
in the solid state, e.g. by cutting
G01N 1/06
. . .
providing a thin slice, e.g. microtome
G01N 1/08
. . .
involving an extracting tool, e.g. core bit
Collapse
G01N 1/10
. .
in the liquid or fluent state
{
burettes, pipettes B01L 3/02; Sampling of ground water E02D 1/06; metering by volume of fluids or fluent solid material G01F 11/00, G01F 13/00
}
Collapse
G01N 1/12
. . .
Dippers; Dredgers
G01N 1/125
. . . .
{
adapted for sampling molten metals
}
Collapse
G01N 1/14
. . .
Suction devices, e.g. pumps; Ejector devices
G01N 1/1409
. . . .
{
adapted for sampling molten metals
}
G01N 1/16
. . .
with provision for intake at several levels
{
G01N 1/2035
}
(G01N 1/12, G01N 1/14 take precedence)
G01N 1/18
. . .
with provision for splitting samples into portions (G01N 1/12, G01N 1/14 take precedence; fraction-collection apparatus for chromatography B01D 15/08)
Collapse
G01N 1/20
. . .
for flowing or falling materials
{
G01N 1/2035
}
(G01N 1/12, G01N 1/14 take precedence)
Collapse
G01N 1/2035
. . . .
{
by deviating part of a fluid stream, e.g. by drawing-off or tapping
}
G01N 1/2042
. . . . .
{
using a piston actuated by the pressure of the liquid to be sampled
}
Collapse
G01N 1/22
. .
in the gaseous state
{
(specially adapted for biological material G01N 33/497; measuring breath flow A61B 5/087)
}
Collapse
G01N 1/2202
. . .
{
involving separation of sample components during sampling
}
G01N 1/2205
. . . .
{
with filters
}
G01N 1/2208
. . . .
{
with impactors
}
G01N 1/2211
. . . .
{
with cyclones
}
G01N 1/2214
. . . .
{
by sorption
}
G01N 1/2226
. . .
{
Sampling from a closed space, e.g. food package, head space
}
Collapse
G01N 1/2247
. . .
{
Sampling from a flowing stream of gas
}
G01N 1/2252
. . . .
{
in a vehicle exhaust
}
G01N 1/2258
. . . .
{
in a stack or chimney
}
G01N 1/2273
. . .
{
Atmospheric sampling
}
G01N 1/2294
. . .
{
Sampling soil gases or the like
}
G01N 1/24
. . .
Suction devices
{
(G01N 1/22 to G01N 1/2294 take precedence)
}
G01N 1/26
. . .
with provision for intake from several spaces
Collapse
G01N 1/28
.
Preparing specimens for investigation
{
including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N 33/50, C12Q
}
(mounting specimens on microscopic slides G02B 21/34; means for supporting the objects or the materials to be analysed in electron microscopes H01J 37/20;
{
laboratory gas handling apparatus B01L 5/00
}
)
G01N 1/2806
. .
{
Means for preparing replicas of specimens, e.g. for microscopal analysis
}
G01N 1/2813
. .
{
Producing thin layers of samples on a substrate, e.g. smearing, spinning-on (G01N 1/30 takes precedence)
}
G01N 1/2853
. .
{
Shadowing samples
}
G01N 1/286
. .
{
involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising (microtomes G01N 1/06; pulverising in general B02C; mixing in general B01F)
}
Collapse
G01N 1/30
. .
Staining; Impregnating
{
Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
}
Collapse
G01N 1/31
. . .
Apparatus therefor
G01N 1/312
. . . .
{
for samples mounted on planar substrates
}
G01N 1/32
. .
Polishing; Etching
G01N 1/34
. .
Purifying; Cleaning
{
(processes or apparatus for extracting or separating nucleic acids from biological samples C12N 15/1003)
}
G01N 1/36
. .
Embedding or analogous mounting of samples
G01N 1/38
. .
Diluting, dispersing or mixing samples
Collapse
G01N 1/40
. .
Concentrating samples
G01N 1/4005
. . .
{
by transferring a selected component through a membrane
}
G01N 1/4022
. . .
{
by thermal techniques; Phase changes
}
G01N 1/4044
. . .
{
by chemical techniques; Digestion; Chemical decomposition
}
G01N 1/405
. . .
{
by adsorption or absorption
}
G01N 1/4055
. . .
{
by solubility techniques
}
G01N 1/4077
. . .
{
by other techniques involving separation of suspended solids
}
G01N 1/42
. .
Low-temperature sample treatment, e.g. cryofixation
G01N 1/44
. .
Sample treatment involving radiation, e.g. heat
Collapse
G01N 3/00
Investigating strength properties of solid materials by application of mechanical stress (strain gauges G01B; measuring stress in general G01L)
NOTE
-
This group covers the stressing of materials not only below but also beyond the elastic limit, e.g. until breaking occurs.

Collapse
G01N 3/02
.
Details
G01N 3/04
. .
Chucks
Collapse
G01N 3/06
. .
Special adaptations of indicating or recording means (indicating or recording means for measuring in general G01D)
G01N 3/062
. . .
{
with mechanical indicating or recording means
}
G01N 3/064
. . .
{
with hydraulic indicating or recording means
}
G01N 3/066
. . .
{
with electrical indicating or recording means
}
G01N 3/068
. . .
{
with optical indicating or recording means
}
Collapse
G01N 3/08
.
by applying steady tensile or compressive forces (G01N 3/28 takes precedence)
Collapse
G01N 3/10
. .
generated by pneumatic or hydraulic pressure (G01N 3/18 takes precedence)
G01N 3/12
. . .
Pressure testing (testing fluid-tightness G01M 3/00)
G01N 3/14
. .
generated by dead weight, e.g. pendulum; generated by springs tension (G01N 3/18 takes precedence)
Collapse
G01N 3/16
. .
applied through gearing (G01N 3/18 takes precedence)
G01N 3/165
. . .
{
generated by rotation, i.e. centrifugal force (for testing structures or apparatus G01M19/00C)
}
G01N 3/18
. .
Performing test at high or low temperatures
G01N 3/20
.
by applying steady bending forces (G01N 3/26, G01N 3/28 take precedence)
G01N 3/22
.
by applying steady torsional forces (G01N 3/26, G01N 3/28 take precedence)
G01N 3/24
.
by applying steady shearing forces (G01N 3/26, G01N 3/28 take precedence)
G01N 3/26
.
Investigating twisting or coiling properties
G01N 3/28
.
Investigating ductility, e.g. suitability of sheet metal for deep-drawing or spinning
Collapse
G01N 3/30
.
by applying a single impulsive force, e.g. by falling weight
G01N 3/303
. .
generated only by free-falling weight
G01N 3/307
. .
generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
G01N 3/31
. .
generated by a rotating fly-wheel
G01N 3/313
. .
generated by explosives
G01N 3/317
. .
generated by electromagnetic means
Collapse
G01N 3/32
.
by applying repeated or pulsating forces (generation of such forces in general, see the relevant classes or subclasses, e.g. B06, G10)
Collapse
G01N 3/34
. .
generated by mechanical means, e.g. hammer blows
G01N 3/342
. . .
{
for tensile or compressive investigation
}
G01N 3/345
. . .
{
for bending investigation
}
G01N 3/347
. . .
{
for torsional investigation
}
Collapse
G01N 3/36
. .
generated by pneumatic or hydraulic means
G01N 3/362
. . .
{
for tensile or compressive investigation
}
G01N 3/365
. . .
{
for bending investigation
}
G01N 3/367
. . .
{
for torsional investigation
}
Collapse
G01N 3/38
. .
generated by electromagnetic means
G01N 3/382
. . .
{
for tensile or compressive investigation
}
G01N 3/385
. . .
{
for bending investigation
}
G01N 3/387
. . .
{
for torsional investigation
}
Collapse
G01N 3/40
.
Investigating hardness or rebound hardness
G01N 3/405
. .
{
by determining the vibration frequency of a sensing element in contact with the specimen
}
Collapse
G01N 3/42
. .
by performing impressions under a steady load by indentors, e.g. sphere, pyramid (G01N 3/54 takes precedence)
G01N 3/44
. . .
the indentors being put under a minor load and a subsequent major load, i.e. Rockwell system
G01N 3/46
. . .
the indentors performing a scratching movement
G01N 3/48
. .
by performing impressions under impulsive load by indentors, e.g. falling ball (G01N 3/54 takes precedence)
G01N 3/50
. .
by measuring rolling friction, e.g. by rocking pendulum (G01N 3/54 takes precedence)
G01N 3/52
. .
by measuring extent of rebound of a striking body (G01N 3/54 takes precedence)
G01N 3/54
. .
Performing tests at high or low temperatures
Collapse
G01N 3/56
.
Investigating resistance to wear or abrasion
G01N 3/562
. .
{
using radioactive tracers
}
G01N 3/565
. .
{
of granular or particulate material
}
G01N 3/567
. .
{
by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion (G01N 3/565 takes precedence)
}
G01N 3/58
.
Investigating machinability by cutting tools; Investigating the cutting ability of tools
G01N 3/60
.
Investigating resistance of materials, e.g. refractory materials, to rapid heat changes
{
(thermal testing of structures or apparatus G01M19/00B)
}
G01N 3/62
.
Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
Collapse
G01N 5/00
Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid (G01N 9/00 takes precedence;
{
weighing per se G01G
}
)
Collapse
G01N 5/02
.
by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
{
absorption bulbs B01D 53/00
}
G01N 5/025
. .
{
for determining moisture content
}
Collapse
G01N 5/04
.
by removing a component, e.g. by evaporation, and weighing the remainder
G01N 5/045
. .
{
for determining moisture content
}
Collapse
G01N 7/00
Analysing materials by measuring the pressure or volume of a gas or vapour
Collapse
G01N 7/02
.
by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
{
absorption bulbs B01D 53/00
}
G01N 7/04
. .
by absorption or adsorption alone
G01N 7/06
. .
by combustion alone
G01N 7/08
. .
by combustion followed by absorption or adsorption of the combustion products
Collapse
G01N 7/10
.
by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
G01N 7/12
. .
the diffusion being followed by combustion or catalytic oxidation
Collapse
G01N 7/14
.
by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
{
determining urea G01N 33/48742
}
G01N 7/16
. .
by heating the material
Collapse
G01N 7/18
. .
by allowing the material to react
Collapse
G01N 7/20
. . .
the reaction being fermentation
G01N 7/22
. . . .
of dough
Collapse
G01N 9/00
Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity (weighing apparatus G01G)
G01N 9/002
.
{
using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis (G01N 9/34 takes precedence)
}
Collapse
G01N 9/02
.
by measuring weight of a known volume
Collapse
G01N 9/04
. .
of fluids
G01N 9/06
. . .
with continuous circulation through a pivotally supported member
G01N 9/08
.
by measuring buoyant force of solid materials by weighing both in air and in a liquid
Collapse
G01N 9/10
.
by observing bodies wholly or partially immersed in fluid materials
Collapse
G01N 9/12
. .
by observing the depth of immersion of the bodies, e.g. hydrometers
G01N 9/14
. . .
the body being built into a container
G01N 9/16
. . .
the body being pivoted
G01N 9/18
. . .
Special adaptations for indicating, recording, or control
Collapse
G01N 9/20
. .
by balancing the weight of the bodies
G01N 9/22
. . .
with continuous circulation of the fluid
G01N 9/24
.
by observing the transmission of wave or particle radiation through the material
Collapse
G01N 9/26
.
by measuring pressure differences
G01N 9/266
. .
{
for determining gas density
}
G01N 9/28
. .
by measuring the blowing pressure of gas bubbles escaping from nozzles at different depths in a liquid
G01N 9/30
.
by using centrifugal effects
Collapse
G01N 9/32
.
by using flow properties of fluids, e.g. flow through tubes or apertures
G01N 9/34
. .
by using elements moving through the fluid, e.g. vane
G01N 9/36
.
Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture (methods of measurement in general G01N 9/02 to G01N 9/32)
Collapse
G01N 11/00
Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
Collapse
G01N 11/02
.
by measuring flow of the material
Collapse
G01N 11/04
. .
through a restricted passage, e.g. tube, aperture
G01N 11/06
. . .
by timing the outflow of a known quantity
G01N 11/08
. . .
by measuring pressure required to produce a known flow
Collapse
G01N 11/10
.
by moving a body within the material
G01N 11/105
. .
{
by detecting the balance position of a float moving in a duct conveying the fluid under test
}
G01N 11/12
. .
by measuring rising or falling speed of the body; by measuring penetration of wedged gauges (G01N 11/16 takes precedence)
Collapse
G01N 11/14
. .
by using rotary bodies, e.g. vane (G01N 11/16 takes precedence)
G01N 11/142
. . .
{
Sample held between two members substantially perpendicular to axis of rotation, e.g. parallel plate viscometer
}
Collapse
G01N 11/16
. .
by measuring damping effect upon oscillatory body
Collapse
G01N 11/162
. . .
{
Oscillations being torsional, e.g. produced by rotating bodies
}
G01N 11/165
. . . .
{
Sample held between two members substantially perpendicular to axis of rotation, e.g. parallel plate viscometer
}
G01N 11/167
. . . .
{
Sample holder oscillates, e.g. rotating crucible
}
Collapse
G01N 13/00
Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects (scanning-probe techniques or apparatus G01Q)
G01N 13/02
.
Investigating surface tension of liquids
G01N 13/04
.
Investigating osmotic effects
Collapse
G01N 15/00
Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials (identification of micro-organisms C12Q)
Collapse
G01N 15/02
.
Investigating particle size or size distribution (G01N 15/04, G01N 15/10 take precedence; by measuring osmotic pressure G01N 7/10; by filtering B01D; by sifting B07B)
Collapse
G01N 15/0205
. .
{
by optical means, e.g. by light scattering, diffraction, holography or imaging
}
G01N 15/0211
. . .
{
Investigating a scatter or diffraction pattern
}
G01N 15/0227
. . .
{
using imaging, e.g. a projected image of suspension; using holography
}
G01N 15/0255
. .
{
with mechanical, e.g. inertial, classification, and investigation of sorted collections (with centrifuges G01N 15/042)
}
G01N 15/0266
. .
{
with electrical classification
}
G01N 15/0272
. .
{
with screening; with classification by filtering (B01D takes precedence)
}
Collapse
G01N 15/04
.
Investigating sedimentation of particle suspensions
G01N 15/042
. .
{
by centrifuging and investigating centrifugates (centrifuges per se B04B)
}
G01N 15/05
. .
in blood
Collapse
G01N 15/06
.
Investigating concentration of particle suspensions (G01N 15/04, G01N 15/10 take precedence; by weighing G01N 5/00)
NOTE
-
- Investigating or analysing materials;
- by the use of optical means: G01N 21/00, e.g. G01N 21/47, G01N 21/90;
- by other radiations or by particles: G01N 23/00, e.g. G01N 23/02, G01N 23/201;
- by measuring impedance: G01N 27/02, e.g. G01N 27/06, G01N 27/22;
- by electrochemical means: G01N 27/00, e.g. G01N 27/26, G01N27/56B;
- by measuring absorption of sonic or ultrasonic vibrations: G01N 29/00, e.g. G01N 29/02

Collapse
G01N 15/0606
. .
{
by collecting particles on a support
}
G01N 15/0612
. . .
{
Optical scan of the deposits (G01N 15/0625 takes precedence)
}
Collapse
G01N 15/0618
. . .
{
of the filter type (G01N 15/0643 takes precedence)
}
G01N 15/0625
. . . .
{
Optical scan of the deposits
}
G01N 15/0631
. . . .
{
Separation of liquids, e.g. by absorption, wicking
}
Collapse
G01N 15/0637
. . .
{
Moving support
}
G01N 15/0643
. . . .
{
of the filter type
}
G01N 15/065
. .
{
using condensation nuclei counters
}
G01N 15/0656
. .
{
using electric, e.g. electrostatic methods or magnetic methods (by investigating individual particles G01N 15/1031, G01N 15/12)
}
Collapse
G01N 15/08
.
Investigating permeability, pore-volume, or surface area of porous materials
G01N 15/0806
. .
{
Details, e.g. sample holders, mounting samples for testing
}
Collapse
G01N 15/082
. .
{
Investigating permeability by forcing a fluid through a sample
}
G01N 15/0826
. . .
{
and measuring fluid flow rate, i.e. permeation rate or pressure change
}
Collapse
G01N 15/088
. .
{
Investigating volume, surface area, size or distribution of pores; Porosimetry
}
G01N 15/0886
. . .
{
Mercury porosimetry
}
G01N 15/0893
. . .
{
by measuring weight or volume of sorbed fluid, e.g. B.E.T. method
}
Collapse
G01N 15/10
.
Investigating individual particles
G01N 15/1012
. .
{
Calibrating particle analysers; References therefor
}
G01N 15/1031
. .
{
by measuring electrical or magnetic effects thereof, e.g. onconductivity or capacity (using nano-scale size effects, other than for sizing or counting, by translocation through nano-pores G01N 33/48721; involving the use of Coulter counters G01N 15/12)
}
G01N 15/1056
. .
{
Micro-structural devices for other than electro-optical measurement (for electro-optical measurement G01N 15/1484)
}
Collapse
G01N 15/12
. .
Coulter-counters
Collapse
G01N 15/1209
. . .
{
Details
}
G01N 15/1218
. . . .
{
concerning the aperture
}
G01N 15/1227
. . . .
{
Circuits
}
G01N 15/1245
. . .
{
Devices using more than one aperture
}
Collapse
G01N 15/14
. .
Electro-optical investigation, e.g. flow cytometers
G01N 15/1404
. . .
{
Fluid conditioning in flow cytometers, e.g. flow cells; Supply; Control of flow
}
Collapse
G01N 15/1425
. . .
{
using an analyser being characterised by its control arrangement
}
G01N 15/1427
. . . .
{
with the synchronisation of components, a time gate for operation of components, or suppression of particle coincidences
}
Collapse
G01N 15/1429
. . .
{
using an analyser being characterised by its signal processing
}
G01N 15/1431
. . . .
{
the electronics being integrated with the analyser, e.g. hand-held devices for on-site investigation
}
Collapse
G01N 15/1434
. . .
{
using an analyser being characterised by its optical arrangement
}
G01N 15/1436
. . . .
{
the optical arrangement forming an integrated apparatus with the sample container, e.g. a flow cell
}
Collapse
G01N 15/1456
. . .
{
without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals
}
G01N 15/1459
. . . .
{
the analysis being performed on a sample stream
}
G01N 15/1463
. . . .
{
using image analysis for extracting features of the particle
}
NOTE
-
References listed below indicate CPC places which could also be of interest when carrying out a search in respect of the subject matter covered by the preceding group:

- counting objects disposed at random with size distrinction G06M 11/04
- extraction of features from image for pattern recognition G06K 9/46
- specific image analysis method for the recognition of microscopic objects G06K 9/00127
- image enhancement in general G06T 5/00
- image analysis in general G06T 7/00]

Collapse
G01N 15/1468
. . .
{
with spatial resolution of the texture or inner structure of the particle
}
{
Informative Note References listed below indicate CPC places which could also be interest when carrying out a search in respect of the subject matter covered by the preceding group: -counting objects disposed at random with size distrinction G06M 11/04 -extraction of features from image for pattern recognition G06K 9/46 -specific image analysis method for the recognition of microscopic objects G06K 9/00127 -image enhancement in general G06T 5/00 -image analysis in general G06T 7/00
}
NOTE
-
References listed below indicate CPC places which could also be of interest when carrying out a search in respect of the subject matter covered by the preceding group:
- counting objects disposed at random with size distinction G06M 11/04
- extraction of features from image for pattern recognition G06K 9/46
- image enhancement G06T 5/00
- image analysis G06T 7/00

G01N 15/147
. . . .
{
the analysis being performed on a sample stream
}
G01N 15/1475
. . . .
{
using image analysis for extracting features of the particle
}
G01N 15/1484
. . .
{
micro-structural devices
}
WARNING
-
This group is incomplete; see provisionally also groups G01N 15/14, G01N 15/1404, G01N 15/1456 and related indexing codes

Collapse
G01N 17/00
Investigating resistance of materials to the weather, to corrosion, or to light
G01N 17/002
.
{
Test chambers
}
G01N 17/004
.
{
to light
}
G01N 17/006
.
{
of metals
}
G01N 17/008
.
{
Monitoring fouling
}
G01N 17/02
.
Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
Collapse
G01N 17/04
.
Corrosion probes
Collapse
G01N 17/043
. .
{
Coupons
}
G01N 17/046
. . .
{
Means for supporting or introducing coupons
}
Collapse
G01N 19/00
Investigating materials by mechanical methods (G01N 3/00 to G01N 17/00 take precedence)
G01N 19/02
.
Measuring coefficient of friction between materials
{
(testing of tyres G01M 17/02; determinations of friction coefficient used in vehicle braking or traction control systems B60T 8/172)
}
G01N 19/04
.
Measuring adhesive force between materials, e.g. of sealing tape, of coating
G01N 19/06
.
Investigating by removing material, e.g. spark-testing
G01N 19/08
.
Detecting presence of flaws or irregularities (measuring roughness or irregularity of surfaces G01B 5/28)
G01N 19/10
.
Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers
Collapse
G01N 21/00
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light (G01N 3/00 to G01N 19/00 take precedence; measuring stress in general G01L 1/00; optical elements of measuring instruments G02B)
NOTE
-
This group does not cover the investigation of spectral properties of light per se, or measurements of the properties of materials where spectral properties of light are sensed and primary emphasis is placed on creating, detecting or analysing the spectrum providing that the properties of the materials to be investigated are of minor importance (see also Note (4) after the title of class G01). Those subjects are covered by group G01J 3/00.

Collapse
G01N 21/01
.
Arrangements or apparatus for facilitating the optical investigation
Collapse
G01N 21/03
. .
Cuvette constructions
G01N 21/0303
. . .
{
Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment (G01N 21/031 to G01N 21/15 take precedence)
}
G01N 21/031
. . .
{
Multipass arrangements
}
G01N 21/0317
. . .
{
High pressure cuvettes; (G01N 21/0332 to G01N 21/15 take precedence)
}
G01N 21/0332
. . .
{
with temperature control (control of temperature G05D 23/00; cryostats F17C 3/08)
}
G01N 21/05
. . .
Flow-through cuvettes (G01N 21/09 takes precedence; handling fluid samples G01N 1/10)
G01N 21/07
. . .
Centrifugal type cuvettes (G01N 21/09 takes precedence; centrifuges per se B04B)
G01N 21/09
. . .
adapted to resist hostile environments or corrosive or abrasive materials
G01N 21/11
. .
Filling or emptying of cuvettes
G01N 21/13
. .
Moving of cuvettes or solid samples to or from the investigating station
{
handling materials for automatic analysis G01N 35/00
}
G01N 21/15
. .
Preventing contamination of the components of the optical system or obstruction of the light path
Collapse
G01N 21/17
.
Systems in which incident light is modified in accordance with the properties of the material investigated (where the material investigated is optically excited causing a change in wavelength of the incident light G01N 21/63)
G01N 21/1702
. .
{
with opto-acoustic detection, e.g. for gases or analysing solids
}
G01N 21/171
. .
{
with calorimetric detection, e.g. with thermal lens detection
}
G01N 21/1717
. .
{
with a modulation of one or more physical properties of the sample during the optical investigation, e.g. electro-reflectance
}
G01N 21/19
. .
Dichroism
Collapse
G01N 21/21
. .
Polarisation-affecting properties (G01N 21/19 takes precedence)
G01N 21/211
. . .
{
Ellipsometry (optical thickness measurement G01B 11/06)
}
G01N 21/23
. . .
Bi-refringence
Collapse
G01N 21/25
. .
Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
Collapse
G01N 21/251
. . .
{
Colorimeters; Construction thereof
}
G01N 21/253
. . . .
{
for batch operation, i.e. multisample apparatus (analytical automats G01N 35/00)
}
G01N 21/255
. . .
{
Details, e.g. use of specially adapted sources, lighting or optical systems
}
G01N 21/256
. . .
{
Arrangements using two alternating lights and one detector
}
Collapse
G01N 21/27
. . .
using photo-electric detection (G01N 21/31 takes precedence)
{
circuits for computing concentration (logarithmic circuits G06G 7/24; photometric circuits in general G01J)
}
G01N 21/272
. . . .
{
for following a reaction, e.g. for determining photometrically a reaction rate (photometric cinetic analysis)
}
Collapse
G01N 21/274
. . . .
{
Calibration, base line adjustment, drift correction
}
G01N 21/276
. . . . .
{
with alternation of sample and standard in optical path
}
G01N 21/278
. . . . .
{
Constitution of standards
}
Collapse
G01N 21/29
. . .
using visual detection (G01N 21/31 takes precedence)
G01N 21/293
. . . .
{
with colour charts, graduated scales or turrets
}
Collapse
G01N 21/31
. . .
Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
{
(G01N 21/72 takes precedence)
}
G01N 21/3103
. . . .
{
Atomic absorption analysis
}
Collapse
G01N 21/314
. . . .
{
with comparison of measurements at specific and non-specific wavelengths (dual wavelength spectrometry G01J 3/427)
}
G01N 21/3151
. . . . .
{
using two sources of radiation of different wavelengths (G01N 21/33 to G01N 21/39 take precedence)
}
G01N 21/33
. . . .
using ultra-violet light (G01N 21/39 takes precedence)
Collapse
G01N 21/35
. . . .
using infra-red light (G01N 21/39 takes precedence)
Collapse
G01N 21/3504
. . . . .
{
for analysing gases, e.g. multigases analysis
}
G01N 21/3518
. . . . . .
{
Devices using the gas filter correlation method including the radiometric type, i.e. without instrumental source; Devices using gas pressure modulation method
}
Collapse
G01N 21/3554
. . . . .
{
for determining moisture
}
G01N 21/3559
. . . . . .
{
in sheets, e.g. in paper
}
{
WARNINGNot complete, see also G01N 21/3554
}
G01N 21/3563
. . . . .
{
for analysing solids; preparation of samples therefor (sampling or preparing specimen for investigation in general G01N 1/00)
}
G01N 21/3577
. . . . .
{
for analysing liquids, e.g. polluted water
}
WARNING
-
Not complete, see also G01N 21/35

Collapse
G01N 21/3581
. . . . .
{
using far infrared; using Terahertz radiation
}
G01N 21/3586
. . . . . .
{
by Terahertz time domain spectroscopy [THz-TDS
}
]
WARNING
-
Not complete, see also G01N 21/3581

G01N 21/359
. . . . .
{
using near infra-red light
}
G01N 21/37
. . . . .
using pneumatic detection
{
(opto-acoustic detection G01N 21/1702)
}
G01N 21/39
. . . .
using tunable lasers
Collapse
G01N 21/41
. .
Refractivity; Phase-affecting properties, e.g. optical path length (G01N 21/21 takes precedence)
G01N 21/412
. . .
{
Index profiling of optical fibres
}
G01N 21/4133
. . .
{
Refractometers, e.g. differential
}
Collapse
G01N 21/43
. . .
by measuring critical angle
G01N 21/431
. . . .
{
Dip refractometers, e.g. using optical fibres
}
Collapse
G01N 21/45
. . .
using interferometric methods; using Schlieren methods
G01N 21/453
. . . .
{
Holographic interferometry (for dimensional measurements G01B 9/021 to G01B 9/029)
}
G01N 21/455
. . . .
{
Schlieren methods, e.g. for gradient index determination; Shadowgraph
}
Collapse
G01N 21/47
. .
Scattering, i.e. diffuse reflection (G01N 21/25, G01N 21/41 take precedence)
{
G01N 21/55 takes precedence
}
Collapse
G01N 21/4738
. . .
{
Diffuse reflection (precedence is given to G01N 21/55-G01N 21/57 if specular component is taken into consideration), e.g. also for testing fluids, fibrous materials
}
G01N 21/474
. . . .
{
Details of optical heads therefor, e.g. using optical fibres
}
G01N 21/4785
. . .
{
Standardising light scatter apparatus; Standards therefor
}
G01N 21/4788
. . .
{
Diffraction (for sizing particles G01N 15/0205)
}
G01N 21/4795
. . .
{
spatially resolved investigating of object in scattering medium (in vivo A61B)
}
Collapse
G01N 21/49
. . .
within a body or fluid
G01N 21/51
. . . .
inside a container, e.g. in an ampoule (G01N 21/53 takes precedence; checking containers for cleanliness B08B 9/46)
Collapse
G01N 21/53
. . . .
within a flowing fluid, e.g. smoke (alarm devices actuated by smoke G08B 17/10)
G01N 21/532
. . . . .
{
with measurement of scattering and transmission
}
G01N 21/534
. . . . .
{
by measuring transmission alone, i.e. determining opacity
}
G01N 21/538
. . . . .
{
for determining atmospheric attenuation and visibility
}
Collapse
G01N 21/55
. .
Specular reflectivity
Collapse
G01N 21/552
. . .
{
Attenuated total reflection
}
Collapse
G01N 21/553
. . . .
{
and using surface plasmons (fluorescence excitation G01N 21/648; enhanced Raman G01N 21/658)
}
G01N 21/554
. . . . .
{
detecting the surface plasmon resonance of nanostructured metals, e.g. localised surface plasmon resonance
}
G01N 21/57
. . .
Measuring gloss
Collapse
G01N 21/59
. .
Transmissivity (G01N 21/25 takes precedence)
Collapse
G01N 21/5907
. . .
{
Densitometers
}
G01N 21/5911
. . . .
{
of the scanning type (scanning per se G02B)
}
G01N 21/61
. . .
Non-dispersive gas analysers
{
(G01N 21/3504 takes precedence)
}
Collapse
G01N 21/62
.
Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
Collapse
G01N 21/63
. .
optically excited
G01N 21/631
. . .
{
using photolysis and investigating photolysed fragments
}
G01N 21/636
. . .
{
using an arrangement of pump beam and probe beam; using the measurement of optical non-linear properties; (non-linear optics per se G02F 1/35)
}
Collapse
G01N 21/64
. . .
Fluorescence; Phosphorescence
Collapse
G01N 21/6402
. . . .
{
Atomic fluorescence; Laser induced fluorescence
}
G01N 21/6404
. . . . .
{
Atomic fluorescence
}
G01N 21/6408
. . . .
{
with measurement of decay time, time resolved fluorescence
}
Collapse
G01N 21/6428
. . . .
{
Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" (in vivo A61B 5/00; immunoassay G01N 33/53)
}
G01N 21/643
. . . . .
{
non-biological material
}
WARNING
-
Not complete, see G01N 21/64H

G01N 21/6445
. . . .
{
Measuring fluorescence polarisation
}
G01N 21/6447
. . . .
{
by visual observation
}
Collapse
G01N 21/645
. . . .
{
Specially adapted constructive features of fluorimeters
}
WARNING
-
Not complete, see also G01N 21/6428 to G01N 21/64M

Collapse
G01N 21/6452
. . . . .
{
Individual samples arranged in a regular 2D-array, e.g. multiwell plates
}
WARNING
-
Not complete, see also G01N 21/6428 to G01N 21/645 and G01N 21/253

G01N 21/6454
. . . . . .
{
using an integrated detector array
}
NOTE
-
Not complete, see G01N 21/64P

Collapse
G01N 21/6456
. . . . .
{
Spatial resolved fluorescence measurements; Imaging
}
WARNING
-
Not complete, see also G01N 21/6428 to G01N 21/64M

G01N 21/6458
. . . . . .
{
Fluorescence microscopy (fluorescence microscopes per se G02B 21/0076 and G02B 21/16)
}
WARNING
-
Not complete, see also G01N 21/6428 to G01N 21/64M

G01N 21/648
. . . . .
{
using evanescent coupling or surface plasmon coupling for the excitation of fluorescence
}
WARNING
-
Not complete, see also G01N 21/553 and G01N 21/64H

G01N 21/6486
. . . .
{
Measuring fluorescence of biological material, e.g. DNA, RNA, cells (G01N 21/6428 takes precedence)
}
WARNING
-
Not complete, see also G01N 21/6428 to G01N 21/64M

G01N 21/6489
. . . .
{
Photoluminescence of semiconductors
}
Collapse
G01N 21/65
. . .
Raman scattering
G01N 21/658
. . . .
{
enhancement Raman, e.g. surface plasmons
}
WARNING
-
Not complete, see G01N 21/65

Collapse
G01N 21/66
. .
electrically excited, e.g. electroluminescence
G01N 21/67
. . .
using electric arcs or discharges (spark gaps per se H01T)
G01N 21/68
. . .
using high frequency electric fields
G01N 21/69
. . .
specially adapted for fluids
{
e.g. molten metal
}
G01N 21/70
. .
mechanically excited, e.g. triboluminescence
Collapse
G01N 21/71
. .
thermally excited
G01N 21/714
. . .
{
Sample nebulisers for flame burners or plasma burners (nebulizers per se B05B)
}
G01N 21/716
. . .
{
by measuring the radiation emitted by a test object treated by combustion gases for investigating the composition of gas mixtures
}
G01N 21/718
. . .
{
Laser microanalysis, i.e. with formation of sample plasma
}
G01N 21/72
. . .
using flame burners
G01N 21/73
. . .
using plasma burners or torches
G01N 21/74
. . .
using flameless atomising, e.g. graphite furnaces
Collapse
G01N 21/75
.
Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated (systems in which material is burnt in a flame or plasma G01N 21/72, G01N 21/73)
Collapse
G01N 21/76
. .
Chemiluminescence; Bioluminescence
G01N 21/763
. . .
{
Bioluminescence
}
G01N 21/766
. . .
{
of gases
}
Collapse
G01N 21/77
. .
by observing the effect on a chemical indicator
Collapse
G01N 21/7703
. . .
{
using reagent-clad optical fibres or optical waveguides (using measurement of total internal reflection or attenuated total reflection G01N 21/552; optical fibres or waveguides per se G02B)
}
Collapse
G01N 21/774
. . . .
{
the reagent being on a grating or periodic structure
}
G01N 21/7743
. . . . .
{
the reagent-coated grating coupling light in or out of the waveguide
}
G01N 21/7746
. . . .
{
the waveguide coupled to a cavity resonator
}
Collapse
G01N 21/78
. . .
producing a change of colour
G01N 21/783
. . . .
{
for analysing gases
}
G01N 21/79
. . . .
Photometric titration
G01N 21/80
. . . .
Indicating pH value
G01N 21/81
. . . .
Indicating humidity
Collapse
G01N 21/82
. . .
producing a precipitate or turbidity
G01N 21/83
. . . .
Turbidimetric titration
Collapse
G01N 21/84
.
Systems specially adapted for particular applications
G01N 21/8422
. .
{
Investigating thin films, e.g. matrix isolation method
}
G01N 21/8483
. .
{
Investigating reagent band (test-element handling not specific to a test method G01N 33/4875; analytical elements specific to chemical analysis of biological material G01N 33/52; autometer with reagent band G01N 35/04)
}
Collapse
G01N 21/85
. .
Investigating moving fluids or granular solids
G01N 21/8507
. . .
{
Probe photometers, i.e. with optical measuring part dipped into fluid sample
}
G01N 21/86
. .
Investigating moving sheets (G01N 21/89 takes precedence)
G01N 21/87
. .
Investigating jewels (G01N 21/88 takes precedence)
Collapse
G01N 21/88
. .
Investigating the presence of flaws or contamination
G01N 21/8803
. . .
{
Visual inspection (measuring projectors G01B 9/08)
}
G01N 21/8806
. . .
{
Specially adapted optical and illumination features
}
G01N 21/8851
. . .
{
Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges (G01N 21/8806 and G01N 21/93 to G01N 21/95692 take precedence; optical measurement of dimensions G01B 11/00; optical scanning G02B 26/10; image transformation G06T 3/00; computerised image enhancement G06T 5/00; image processing per se for flaw detection G06T 7/0002)
}
Collapse
G01N 21/89
. . .
in moving material, e.g. running paper or textiles (G01N 21/90, G01N 21/91, G01N 21/94 take precedence)
Collapse
G01N 21/8901
. . . .
{
Optical details; Scanning details (per se G02B)
}
G01N 21/8903
. . . . .
{
using a multiple detector array
}
Collapse
G01N 21/8914
. . . .
{
characterised by the material examined
}
G01N 21/8915
. . . . .
{
non-woven textile material
}
G01N 21/8916
. . . . .
{
for testing photographic material
}
Collapse
G01N 21/892
. . . .
characterised by the flaw, defect or object feature examined
G01N 21/8921
. . . . .
{
Streaks
}
G01N 21/8922
. . . . .
{
Periodic flaws
}
G01N 21/894
. . . . .
Pinholes
G01N 21/896
. . . . .
Optical defects in or on transparent materials, e.g. distortion, surface flaws
{
in conveyed flat sheet or rod (for other objects G01N 21/958)
}
Collapse
G01N 21/898
. . . . .
irregularities in textured or patterned surfaces, e.g. textiles, wood
G01N 21/8983
. . . . . .
{
for testing textile webs, i.e. woven material
}
G01N 21/8986
. . . . . .
{
Wood
}
Collapse
G01N 21/90
. . .
in a container or its contents (G01N 21/91 takes precedence)
G01N 21/9009
. . . .
{
Non-optical constructional details affecting optical inspection, e.g. cleaning mechanisms for optical parts, vibration reduction
}
Collapse
G01N 21/9018
. . . .
{
Dirt detection in containers
}
G01N 21/9027
. . . . .
{
in containers after filling
}
WARNING
-
Not complete, see also G01N 21/90, G01N 21/90B, G01N 21/90C

G01N 21/9036
. . . .
{
using arrays of emitters or receivers
}
G01N 21/9045
. . . .
{
Inspection of ornamented or stippled container walls
}
WARNING
-
Not complete, see also G01N 21/90, G01N 21/90B, G01N 21/90C

G01N 21/9054
. . . .
{
Inspection of sealing surface and container finish
}
G01N 21/9072
. . . .
{
with illumination or detection from inside the container
}
G01N 21/9081
. . . .
{
Inspection especially designed for plastic containers, e.g. preforms
}
G01N 21/909
. . . .
{
in opaque containers or opaque container parts, e.g. cans, tins, caps, labels
}
G01N 21/91
. . .
using penetration of dyes, e.g. fluorescent ink
G01N 21/93
. . .
Detection standards; Calibrating
{
baseline adjustment, drift correction
}
G01N 21/94
. . .
Investigating contamination, e.g. dust (G01N 21/85 takes precedence)
Collapse
G01N 21/95
. . .
characterised by the material or shape of the object to be examined (G01N 21/89 to G01N 21/91, G01N 21/94 take precedence)
Collapse
G01N 21/9501
. . . .
{
Semiconductor wafers (manufacturing processes per se of semiconductor devices implementing a measuring step H01L 22/10)
}
G01N 21/9503
. . . . .
{
Wafer edge inspection
}
G01N 21/9505
. . . . .
{
Wafer internal defects, e.g. microcracks
}
G01N 21/9506
. . . .
{
Optical discs
}
G01N 21/9508
. . . .
{
Capsules; Tablets
}
G01N 21/951
. . . .
{
Balls
}
G01N 21/9515
. . . .
{
Objects of complex shape, e.g. examined with use of a surface follower device (measuring contours and curvatures G01B 11/24)
}
G01N 21/952
. . . .
Inspecting the exterior surface of cylindrical bodies or wires (G01N 21/956 takes precedence)
G01N 21/954
. . . .
Inspecting the inner surface of hollow bodies, e.g. bores
Collapse
G01N 21/956
. . . .
Inspecting patterns on the surface of objects (contactless testing of electronic circuits G01R 31/308; testing currency G07D
{
manufacturing processes per se of semiconductor devices implementing a measuring step H01L 22/10
}
)
G01N 21/95607
. . . . .
{
using a comparative method
}
G01N 21/95623
. . . . .
{
using a spatial filtering method (per se G02B)
}
G01N 21/95684
. . . . .
{
Patterns showing highly reflecting parts, e.g. metallic elements
}
G01N 21/95692
. . . . .
{
Patterns showing hole parts, e.g. honeycomb filtering structures
}
G01N 21/958
. . . .
Inspecting transparent materials
{
or objects, e.g. windscreens (for conveyed flat sheet or rod G01N 21/896)
}
Collapse
G01N 22/00
Investigating or analysing materials by the use of microwaves (G01N 3/00 to G01N 17/00, G01N 24/00 take precedence)
G01N 22/005
.
{
and using Stark effect modulation
}
G01N 22/02
.
Investigating the presence of flaws
G01N 22/04
.
Investigating moisture content
Collapse
G01N 23/00
Investigating or analysing materials by the use of wave or particle radiation not covered by G01N 21/00 or G01N 22/00, e.g. X-rays or neutrons (G01N 3/00 to G01N 17/00 take precedence; measuring stress in general G01L 1/00; measurement of nuclear or X-radiation G01T; introducing objects or materials into nuclear reactors, or removing them therefrom, or storing them after treatment therein G21C; construction or operation of X-ray apparatus or circuits therefor H05G)
G01N 23/005
.
{
by using neutrons (G01N 23/02 to G01N 23/227 take precedence)
}
Collapse
G01N 23/02
.
by transmitting the radiation through the material
G01N 23/025
. .
{
using neutrons
}
Collapse
G01N 23/04
. .
and forming a picture (electron microscope per se H01J)
G01N 23/043
. . .
{
using fluoroscopic examination, with visual observation or video transmission of fluoroscopic images
}
G01N 23/046
. . .
{
using tomography, e.g. computer tomography (radiation tomography used in diagnosis A61B 6/02)
}
G01N 23/05
. . .
using neutrons
Collapse
G01N 23/06
. .
and measuring the absorption
G01N 23/063
. . .
{
X-ray absorption fine structure, i.e. EXAFS (G01N 23/2076 takes precedence)
}
G01N 23/066
. . .
{
Gamma-ray resonance absorption, e.g. Mössbauer effect (resonant absorbers or driving arrangements therefor, e.g. for Mössbauer effect devices G21K 1/12)
}
Collapse
G01N 23/08
. . .
using electric detection means
Collapse
G01N 23/083
. . . .
the radiation being X-rays (G01N 23/10 to G01N 23/18 take precedence)
WARNING
-
G01N 23/08

G01N 23/087
. . . . .
using polyenergetic X-rays
WARNING
-
G01N 23/08

G01N 23/09
. . . .
the radiation being neutrons
G01N 23/10
. . . .
the material being confined in a container (G01N 23/09 takes precedence)
Collapse
G01N 23/12
. . . .
the material being a flowing fluid or a flowing granular solid (G01N 23/09 takes precedence)
G01N 23/125
. . . . .
{
with immerged detecting head
}
G01N 23/14
. . . . .
specially adapted for controlling or monitoring operations or for signalling
G01N 23/16
. . . .
the material being a moving sheet
{
or a sheet or tube examined by a scanning probe
}
(G01N 23/09, G01N 23/18 take precedence)
Collapse
G01N 23/18
. . . .
Investigating the presence of flaws (G01N 23/09 takes precedence)
G01N 23/185
. . . . .
{
in tyres (testing tyre performance G01M 17/02)
}
Collapse
G01N 23/20
.
by using diffraction of the radiation, e.g. for investigating crystal structure; by using reflection of the radiation
Collapse
G01N 23/20008
. .
{
Constructional details; Accessories (monochromators for XRays using crystals G21K 1/06; using gratings G01J 3/1833)
}
G01N 23/20016
. . .
{
Goniometers
}
Collapse
G01N 23/20025
. . .
{
Sample holders or supports
}
G01N 23/20033
. . . .
{
provided with temperature control or heating devices
}
G01N 23/20041
. . . .
{
for high pressure testing, e.g. anvil cells
}
G01N 23/2005
. . .
{
Details concerning the preparation of powder samples
}
G01N 23/20058
. .
{
by measuring diffraction of electrons, e.g. LEED method
}
G01N 23/20066
. .
{
by measuring inelastic scatter of gamma rays, e.g. Compton effect
}
G01N 23/20075
. .
{
by measuring interferences of X-rays, e.g. Borrmann effect
}
G01N 23/20083
. .
{
by using a combination of at least two measurements at least one being a transmission measurement and one a scatter measurement
}
G01N 23/20091
. .
{
by measuring the energy-dispersion spectrum of diffracted radiation, i.e. EDS (G01T 1/36 takes precedence)
}
Collapse
G01N 23/201
. .
by measuring small-angle scattering
{
G01N 23/202 takes precedence
}
G01N 23/202
. . .
using neutrons
Collapse
G01N 23/203
. .
by measuring back scattering
G01N 23/204
. . .
using neutrons
Collapse
G01N 23/205
. .
by means of diffraction cameras (G01N 23/201 takes precedence)
G01N 23/2055
. . .
{
Analysing diffraction patterns (optical densitometers G01N 21/5907)
}
G01N 23/206
. . .
the radiation being neutrons
{
(G01N 23/2055 takes precedence)
}
Collapse
G01N 23/207
. .
by means of diffractometry using detectors, e.g. using an analysing crystal or a crystal to be analysed in a central position and one or more displaceable detectors in circumferential positions (G01N 23/201
{
G01N 23/2073
}
 take precedence; spectrometry of detected or measured radiation intensity G01T 1/36)
G01N 23/2073
. . .
{
using neutron detectors (G01N 23/202 takes precedence; neutron spectrometry G01T 3/00)
}
G01N 23/2076
. . .
{
for spectrometry, i.e. using an analysing crystal, e.g. for measuring X-ray fluorescence spectrum of a sample with wavelength-dispersion, i.e. WDXFS (analysis by X-ray fluorescence in general G01N 23/223; Spectrometry of X-rays or gamma-ray beams per se G01T 1/36)
}
Collapse
G01N 23/22
.
by measuring secondary emission
NOTE
-
Devices per se are classified in the relevant places, e.g. H01J 37/00, H01J 49/00

G01N 23/2202
. .
{
Preparing specimens (in general G01N 1/28)
}
G01N 23/2204
. .
{
Specimen supports; Sample conveying means (as parts of specific apparatus, see the relevant groups, e.g. H01J 37/20 and H01J 49/00)
}
Collapse
G01N 23/2206
. .
{
using a combination of at least two kinds of measurements, with at least one measurement of secondary emission
}
G01N 23/2208
. . .
{
using a combination of at least two kinds of measurements, each one being of a secondary emission kind
}
Collapse
G01N 23/221
. .
by activation analysis
G01N 23/222
. . .
using neutrons
G01N 23/223
. .
by irradiating the sample with X-rays
{
or gamma-rays
}
 and by measuring X-ray fluorescence
{
(G01N 23/2076 takes precedence)
}
Collapse
G01N 23/225
. .
using electron or ion microprobe
{
or incident electron or ion beam
}
(electron or ion beam tubes for micropobe analysis H01J 37/00)
Collapse
G01N 23/2251
. . .
{
with incident electron beam
}
G01N 23/2252
. . . .
{
and measuring excited X-rays
}
G01N 23/2254
. . . .
{
and measuring cathodoluminescence
}
Collapse
G01N 23/2255
. . .
{
with incident ion beam, e.g. proton beam
}
G01N 23/2257
. . . .
{
and measuring X-rays excited from incident proton beam, i.e. PIXE
}
G01N 23/2258
. . . .
{
and measuring secondary ion beam, i.e. SIMS
}
Collapse
G01N 23/227
. .
by measuring photoelectric effect, e.g. Auger electrons
G01N 23/2273
. . .
{
by measuring photoelectron spectrum, i.e. ESCA, XPS
}
G01N 23/2276
. . .
{
by measuring Auger electrons, i.e. AES
}
Collapse
G01N 24/00
Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects (arrangements or instruments for measuring magnetic resonance effects G01R 33/20)
G01N 24/002
.
{
Using resonance on molecular beams (atomic clocks G04F 5/14; beam masers H01S 1/06)
}
G01N 24/004
.
{
Using acoustical resonance, i.e. phonon interactions
}
G01N 24/006
.
{
using optical pumping (magnetometers using optical pumping G01R 33/26, optical pumping of lasers H01S 3/091)
}
G01N 24/008
.
{
by using resonance effects in zero field, e.g. in microwave, submillimetric region (by measuring absorption of microwaves by the material G01N 22/00)
}
Collapse
G01N 24/08
.
by using nuclear magnetic resonance (G01N 24/12 takes precedence)
G01N 24/081
. .
{
Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity
}
G01N 24/082
. .
{
Measurement of solid, liquid or gas content
}
G01N 24/084
. .
{
Detection of potentially hazardous samples, e.g. toxic samples, explosives, drugs, firearms, weapons
}
G01N 24/085
. .
{
Analysis of materials for the purpose of controlling industrial production systems
}
G01N 24/087
. .
{
Structure determination of a chemical compound, e.g. of a biomolecule such as a protein
}
WARNING
-
Not complete pending reclassification, see also G01R 33/44

G01N 24/088
. .
{
Assessment or manipulation of a chemical or biochemical reaction, e.g. verification whether a chemical reaction occurred or whether a ligand binds to a receptor in drug screening or assessing reaction kinetics
}
WARNING
-
Not complete, see also G01R 33/44 and its subgroups]

G01N 24/10
.
by using electron paramagnetic resonance (G01N 24/12 takes precedence)
G01N 24/12
.
by using double resonance
G01N 24/14
.
by using cyclotron resonance
Collapse
G01N 25/00
Investigating or analyzing materials by the use of thermal means (G01N 3/00 to G01N 23/00 take precedence)
G01N 25/005
.
{
by investigating specific heat
}
Collapse
G01N 25/02
.
by investigating changes of state or changes of phase; by investigating sintering
{
(investigating or analysing oils or hydrocarbon fluids by measuring cloud point or pour point G01N 33/2811)
}
Collapse
G01N 25/04
. .
of melting point; of freezing point; of softening point
G01N 25/06
. . .
Analysis by measuring change of freezing point
Collapse
G01N 25/08
. .
of boiling point
G01N 25/085
. . .
{
Investigating nucleation
}
G01N 25/10
. . .
Analysis by measuring change of boiling point
G01N 25/12
. .
of critical point; of other phase change
Collapse
G01N 25/14
.
by using distillation, extraction, sublimation, condensation, freezing, or crystallisation (G01N 25/02 takes precedence)
G01N 25/142
. .
{
by condensation
}
G01N 25/145
. .
{
Accessories, e.g. cooling devices (in general B01L, F25D)
}
G01N 25/147
. .
{
by cristallisation
}
G01N 25/16
.
by investigating thermal coefficient of expansion
G01N 25/18
.
by investigating thermal conductivity (by calorimetry G01N 25/20; by measuring change of resistance of an electrically-heated body G01N 27/18)
Collapse
G01N 25/20
.
by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity (calorimeters per se G01K)
Collapse
G01N 25/22
. .
on combustion or catalytic oxidation, e.g. of components of gas mixtures
G01N 25/24
. . .
using combustion tubes, e.g. for microanalysis
G01N 25/26
. . .
using combustion with oxygen under pressure, e.g. in bomb calorimeter
Collapse
G01N 25/28
. . .
the rise in temperature of the gases resulting from combustion being measured directly
Collapse
G01N 25/30
. . . .
using electric temperature-responsive elements
G01N 25/32
. . . . .
using thermoelectric elements
Collapse
G01N 25/34
. . . .
using mechanical temperature-responsive elements, e.g. bimetallic (bimetallic elements per se G12B 1/02)
G01N 25/36
. . . . .
for investigating the composition of gas mixtures
Collapse
G01N 25/38
. . . .
using the melting or combustion of a solid
G01N 25/385
. . . . .
{
for investigating the composition of gas mixtures
}
Collapse
G01N 25/40
. . .
the heat developed being transferred to a flowing fluid
G01N 25/42
. . . .
continuously
Collapse
G01N 25/44
. . .
the heat developed being transferred to a fixed quantity of fluid
G01N 25/46
. . . .
for investigating the composition of gas mixtures
Collapse
G01N 25/48
. .
on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
Collapse
G01N 25/4806
. . .
{
Details not adapted to a particular type of sample
}
Collapse
G01N 25/4813
. . . .
{
concerning the measuring means
}
G01N 25/482
. . . . .
{
concerning the temperature responsive elements (measuring temperature or quantity of heat, thermally-sensitive elements G01K; thermoelectric devices H01L 35/00, H01L 37/00)
}
Collapse
G01N 25/4826
. . . .
{
concerning the heating or cooling arrangements (heating apparatus for chemical or physical laboratory apparatus in general B01L 7/00)
}
G01N 25/4833
. . . . .
{
specially adapted for temperature scanning
}
G01N 25/484
. . . .
{
Heat insulation
}
Collapse
G01N 25/4846
. . .
{
for a motionless, e.g. solid sample
}
Collapse
G01N 25/4853
. . . .
{
Details
}
G01N 25/486
. . . . .
{
Sample holders
}
G01N 25/4866
. . . .
{
by using a differential method
}
Collapse
G01N 25/4873
. . .
{
for a flowing e.g. gas sample
}
Collapse
G01N 25/488
. . . .
{
Details
}
G01N 25/4886
. . . . .
{
concerning the circulation of the sample
}
G01N 25/4893
. . . .
{
by using a differential method
}
Collapse
G01N 25/50
.
by investigating flash-point; by investigating explosibility
G01N 25/52
. .
by determining flash-point of liquids
G01N 25/54
. .
by determining explosibility
Collapse
G01N 25/56
.
by investigating moisture content
Collapse
G01N 25/58
. .
by measuring changes of properties of the material due to heat, cold or expansion
G01N 25/60
. . .
for determining the wetness of steam
Collapse
G01N 25/62
. .
by psychrometric means, e.g. wet-and-dry bulb thermometers
G01N 25/64
. . .
using electric temperature-responsive elements
Collapse
G01N 25/66
. .
by investigating dew-point
G01N 25/68
. . .
by varying the temperature of a condensing surface
G01N 25/70
. . .
by varying the temperature of the material, e.g. by compression, by expansion
G01N 25/72
.
Investigating presence of flaws (by investigating thermal conductivity G01N 25/18)
Collapse
G01N 27/00
Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (G01N 3/00 to G01N 25/00 take precedence; measurement or testing electric or magnetic variables or of electric or magnetic properties of materials G01R)
Collapse
G01N 27/002
.
{
by investigating the work function voltage
}
G01N 27/005
. .
{
by determining the work function in vacuum
}
G01N 27/007
.
{
by investigating the electric dipolar moment (measuring piezo-electric properties G01R 29/22)
}
Collapse
G01N 27/02
.
by investigating the impedance of the material
G01N 27/021
. .
{
before and after chemical transformation of the material
}
Collapse
G01N 27/023
. .
{
where the material is placed in the field of a coil
}
G01N 27/025
. . .
{
a current being generated within the material by induction
}
G01N 27/026
. .
{
Dielectric impedance spectroscopy (electrochemical impedance spectroscopy for measuring corrosion G01N 17/02)
}
G01N 27/028
. .
{
Circuits therefor (measuring impedance per se G01R 27/02)
}
Collapse
G01N 27/04
. .
by investigating resistance
{
(for measuring the amount of particles G01N 15/0656)
}
G01N 27/041
. . .
{
of a solid body
}
G01N 27/043
. . .
{
of a granular material
}
Collapse
G01N 27/045
. . .
{
Circuits (measuring resistance per se G01R 27/00, e.g. G01R 27/22)
}
G01N 27/046
. . . .
{
provided with temperature compensation
}
G01N 27/048
. . .
{
for determining moisture content of the material
}
Collapse
G01N 27/06
. . .
of a liquid (involving electrolysis G01N 27/26; involving polarography G01N 27/48; measuring electric resistance of fluids G01R 27/22)
G01N 27/07
. . . .
Construction of measuring vessels; Electrodes therefor
Collapse
G01N 27/08
. . . .
which is flowing continuously
G01N 27/10
. . . . .
Investigation or analysis specially adapted for controlling or monitoring operations or for signalling (regulating G05D)
Collapse
G01N 27/12
. . .
of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid,
{
for detecting components in the fluid
}
G01N 27/121
. . . .
{
for determining moisture content, e.g. humidity, of the fluid (moisture content of the tested material G01N 27/048)
}
Collapse
G01N 27/122
. . . .
{
Circuits particularly adapted therefor, e.g. linearising circuits
}
Collapse
G01N 27/123
. . . . .
{
for controlling the temperature (temperature control per se G05D 23/00)
}
G01N 27/124
. . . . . .
{
varying the temperature, e.g. in a cyclic manner
}
Collapse
G01N 27/125
. . . .
{
Composition of the body, e.g. the composition of its sensitive layer
}
G01N 27/126
. . . . .
{
comprising organic polymers
}
G01N 27/127
. . . . .
{
comprising nanoparticles
}
G01N 27/128
. . . .
{
Micro-apparatus
}
G01N 27/129
. . . .
{
Diode type sensors, e.g. gas sensitive Schottky diodes (capacitor type sensors G01N 27/227; field-effect transistor type sensors G01N 27/414)
}
Collapse
G01N 27/14
. . .
of an electrically-heated body in dependence upon change of temperature
G01N 27/16
. . . .
caused by burning or catalytic oxidation of a surrounding material to be tested, e.g. of gas
Collapse
G01N 27/18
. . . .
caused by changes in the thermal conductivity of a surrounding material to be tested (G01N 27/20 takes precedence)
G01N 27/185
. . . . .
{
using a catharometer
}
Collapse
G01N 27/20
. . .
Investigating the presence of flaws
G01N 27/205
. . . .
{
in insulating materials
}
Collapse
G01N 27/22
. .
by investigating capacitance
G01N 27/221
. . .
{
by investigating the dielectric properties (using microwaves G01N 22/00; measuring loss factors or dielectric constants per se G01R 27/26)
}
Collapse
G01N 27/223
. . .
{
for determining moisture content, e.g. humidity (rain detectors on vehicle windows B60S 1/0825)
}
G01N 27/225
. . . .
{
by using hygroscopic materials
}
G01N 27/226
. . .
{
Construction of measuring vessels; Electrodes therefor
}
G01N 27/227
. . .
{
Sensors changing capacitance upon adsorption or absorption of fluid components, e.g. electrolyte-insulator-semiconductor sensors, MOS capacitors (G01N 27/225 takes precedence)
}
G01N 27/228
. . .
{
Circuits therefor (measuring capacitance per se G01R 27/26)
}
G01N 27/24
. . .
Investigating the presence of flaws
Collapse
G01N 27/26
.
by investigating electrochemical variables; by using electrolysis or electrophoresis (investigating resistance to corrosion G01N 17/00; investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography, G01N 30/00; immunoelectrophoresis G01N 33/561; electrochemical processes or apparatus in general B01J; standard cells H01M 6/28)
G01N 27/27
. .
Association of two or more measuring systems or cells, each measuring a different parameter, where the measurement results may be either used independently, the systems or cells being physically associated, or combined to produce a value for a further parameter
{
e.g. electrochemical electrode arrays (gas sensor arrays G01N 33/0031)
}
Collapse
G01N 27/28
. .
Electrolytic cell components
Collapse
G01N 27/283
. . .
{
Means for supporting or introducing electrochemical probes
}
G01N 27/286
. . . .
{
Power or signal connectors associated therewith
}
Collapse
G01N 27/30
. . .
Electrodes, e.g. test electrodes; Half-cells (G01N 27/414 takes precedence)
G01N 27/301
. . . .
{
Reference electrodes
}
G01N 27/302
. . . .
{
pH sensitive, e.g. quinhydron, antimony or hydrogen electrodes (ion selective electrodes G01N 27/333, glass electrodes G01N 27/36)
}
G01N 27/304
. . . .
{
Gas permeable electrodes
}
G01N 27/305
. . . .
{
optically transparent or photoresponsive electrodes
}
G01N 27/307
. . . .
{
Disposable laminated or multilayered electrodes (G01N 27/3272 takes precedence)
}
G01N 27/308
. . . .
{
at least partially made of carbon
}
G01N 27/31
. . . .
Half-cells with permeable membranes, e.g. semi-porous or perm-selective membranes
G01N 27/32
. . . .
Calomel electrodes
Collapse
G01N 27/327
. . . .
Biochemical electrodes
{
electrical and mechanical details of in vitro measurements (chemical and biological details C12Q1, G01N 33/543; in vivo A61B5)
}
Collapse
G01N 27/3271
. . . . .
{
Amperometric enzyme electrodes for analytes in body fluids, e.g. glucose in blood (amperometry per se G01N 27/49; aspects concerning the enzyme reagent C12Q 1/001)
}
G01N 27/3272
. . . . . .
{
Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels (optical biosensors G01N 33/52)
}
G01N 27/3273
. . . . . .
{
Devices therefor, e.g. test element readers, circuitry (details not specific to biochemical electrodes G01N 33/4875)
}
G01N 27/3274
. . . . . .
{
Corrective measures, e.g. error detection, compensation for temperature or hematocrit, calibration (coding of calibration information G01N 33/48771)
}
Collapse
G01N 27/3275
. . . . .
{
Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction
}
G01N 27/3276
. . . . . .
{
being a hybridisation with immobilised receptors (using a FET type sensor G01N 27/4145; concerning the hybridisation C12Q 1/68)
}
G01N 27/3277
. . . . . .
{
being a redox reaction, e.g. detection by cyclic voltammetry (voltammetry per se G01N 27/42, G01N 27/48)
}
G01N 27/3278
. . . . . .
{
involving nanosized elements, e.g. nanogaps or nanoparticles (nanopores G01N 33/48721; magnetic beads G01N 27/745)
}
Collapse
G01N 27/333
. . . .
Ion-selective electrodes or membranes (glass electrodes G01N 27/36)
G01N 27/3335
. . . . .
{
the membrane containing at least one organic component (G01N 27/3271 takes precedence; aspects concerning the enzyme reagent in enzyme electrodes C12Q 1/001)
}
G01N 27/34
. . . .
Dropping-mercury electrodes
G01N 27/36
. . . .
Glass electrodes
G01N 27/38
. . . .
Cleaning of electrodes
G01N 27/40
. . .
Semi-permeable membranes or partitions
G01N 27/401
. . .
Salt-bridge leaks; Liquid junctions
Collapse
G01N 27/403
. .
Cells and electrode assemblies
G01N 27/4035
. . .
{
Combination of a single ion-sensing electrode and a single reference electrode (G01N 27/406 and G01N 27/413 take precedence)
}
Collapse
G01N 27/404
. . .
Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid
{
e.g. Clark-type oxygen sensors
}
G01N 27/4045
. . . .
{
for gases other than oxygen
}
Collapse
G01N 27/406
. . .
Cells and probes with solid electrolytes
G01N 27/4062
. . . .
{
Electrical connectors associated therewith
}
G01N 27/4065
. . . .
{
Circuit arrangements specially adapted therefor
}
G01N 27/4067
. . . .
{
Means for heating or controlling the temperature of the solid electrolyte
}
Collapse
G01N 27/407
. . . .
for investigating or analysing gases
{
(G01N 27/411 takes precedence)
}
Collapse
G01N 27/4071
. . . . .
{
using sensor elements of laminated structure
}
G01N 27/4072
. . . . . .
{
characterized by the diffusion barrier
}
Collapse
G01N 27/4073
. . . . .
{
Composition or fabrication of the solid electrolyte
}
G01N 27/4074
. . . . . .
{
for detection of gases other than oxygen
}
Collapse
G01N 27/4075
. . . . .
{
Composition or fabrication of the electrodes and coatings thereon, e.g. catalysts
}
G01N 27/4076
. . . . . .
{
Reference electrodes or reference mixtures
}
G01N 27/4077
. . . . .
{
Means for protecting the electrolyte or the electrodes
}
G01N 27/4078
. . . . .
{
Means for sealing the sensor element in a housing
}
G01N 27/409
. . . . .
Oxygen concentration cells
G01N 27/41
. . . . .
Oxygen pumping cells
Collapse
G01N 27/411
. . . .
for investigating liquid metals
G01N 27/4111
. . . . .
{
using sensor elements of laminated structure
}
Collapse
G01N 27/4112
. . . . .
{
Composition or fabrication of the solid electrolyte
}
G01N 27/4114
. . . . . .
{
for detection of gases other than oxygen
}
Collapse
G01N 27/4115
. . . . .
{
Composition or fabrication of the electrodes and coatings thereon, e.g. catalysts
}
G01N 27/4117
. . . . . .
{
Reference electrodes or reference mixtures
}
G01N 27/4118
. . . . .
{
Means for protecting the electrolyte or the electrodes
}
G01N 27/413
. . .
Concentration cells using liquid electrolytes
{
measuring currents or voltages in voltaic cells
}
Collapse
G01N 27/414
. . .
Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
Collapse
G01N 27/4141
. . . .
{
specially adapted for gases
}
G01N 27/4143
. . . . .
{
Air gap between gate and channel, i.e. suspended gate [SG
}
 FETs (work function measurement per se G01N 27/002)]
G01N 27/4145
. . . .
{
specially adapted for biomolecules, e.g. gate electrode with immobilised receptors
}
G01N 27/4146
. . . .
{
involving nanosized elements, e.g. nanotubes, nanowires
}
G01N 27/4148
. . . .
{
Integrated circuits therefor, e.g. fabricated by CMOS processing (CMOS processing per se H01L 21/82)
}
Collapse
G01N 27/416
. .
Systems (G01N 27/27 takes precedence
{
; for testing batteries G01R 31/36
}
)
G01N 27/4161
. . .
{
measuring the voltage and using a constant current supply, e.g. chronopotentiometry
}
G01N 27/4162
. . .
{
investigating the composition of gases, by the influence exerted on ionic conductivity in a liquid (conductometry in general G01N 27/06; amperometric gas sensors G01N 27/404)
}
Collapse
G01N 27/4163
. . .
{
checking the operation of, or calibrating, the measuring apparatus (G01N 27/3274, G01N 27/4175 and G01N 33/0006 take precedence)
}
G01N 27/4165
. . . .
{
for pH meters
}
Collapse
G01N 27/4166
. . .
{
measuring a particular property of an electrolyte
}
G01N 27/4167
. . . .
{
pH (electrodes therefor G01N 27/302, G01N 27/36)
}
G01N 27/4168
. . . .
{
Oxidation-reduction potential, e.g. for chlorination of water (water analysis G01N 33/18)
}
Collapse
G01N 27/417
. . .
using cells
{
i.e. more than one cell
}
 and probes with solid electrolytes
G01N 27/4175
. . . .
{
Calibrating or checking the analyser
}
G01N 27/419
. . . .
Measuring voltages or currents of oxygen pumping cells and oxygen concentration cells
Collapse
G01N 27/42
. . .
Measuring disposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte
G01N 27/423
. . . .
{
Coulometry
}
G01N 27/426
. . . .
{
by weighing
}
G01N 27/44
. . . .
using electrolysis to regenerate a reagent, e.g. for titration
Collapse
G01N 27/447
. . .
using electrophoresis
{
(aspects concerning peptides or proteins C07K 1/26; for non-analytical purposes B01D 57/02; separating particles by dielectrophoresis B03C5)
}
Collapse
G01N 27/44704
. . . .
{
Details; Accessories
}
G01N 27/44708
. . . . .
{
Cooling
}
G01N 27/44713
. . . . .
{
Particularly adapted electric power supply
}
Collapse
G01N 27/44717
. . . . .
{
Arrangements for investigating the separated zones, e.g. localising zones
}
Collapse
G01N 27/44721
. . . . . .
{
by optical means
}
G01N 27/44726
. . . . . . .
{
using specific dyes, markers or binding molecules
}
G01N 27/4473
. . . . . .
{
by electric means
}
G01N 27/44734
. . . . . .
{
by thermal means
}
G01N 27/44739
. . . . . .
{
Collecting the separated zones, e.g. blotting to a membrane or punching of gel spots
}
G01N 27/44743
. . . . .
{
Introducing samples
}
G01N 27/44747
. . . . .
{
Composition of gel or of carrier mixture
}
G01N 27/44752
. . . . .
{
Controlling the zeta potential, e.g. by wall coatings
}
Collapse
G01N 27/44756
. . . .
{
Apparatus specially adapted therefor
}
G01N 27/4476
. . . . .
{
of the density gradient type
}
G01N 27/44765
. . . . .
{
of the counter-flow type
}
G01N 27/44769
. . . . .
{
Continuous electrophoresis, i.e. the sample being continuously introduced, e.g. free flow electrophoresis [FFE
}
 ]
Collapse
G01N 27/44773
. . . . .
{
Multi-stage electrophoresis, e.g. two-dimensional electrophoresis
}
G01N 27/44778
. . . . . .
{
on a common gel carrier, i.e. 2D gel electrophoresis
}
G01N 27/44782
. . . . .
{
of a plurality of samples
}
G01N 27/44786
. . . . .
{
of the magneto-electrophoresis type
}
G01N 27/44791
. . . . .
{
Micro-apparatus (sample containers with integrated microfluidic structures B01L3/00C6M)
}
G01N 27/44795
. . . . .
{
Isoelectric focusing
}
G01N 27/453
. . . .
Cells therefor
G01N 27/48
. . .
Polarography, i.e. measuring changes in current under a slowly-varying voltage
G01N 27/49
. . .
Systems involving the determination of the current at a single specific value, or small range of values, of applied voltage for producing selective measurement of one or more particular ionic species
Collapse
G01N 27/60
.
by investigating electrostatic variables, e.g. electrographic flaw testing (
{
G01N 27/007 takes precedence
}
; by investigating capacitance G01N 27/22)
G01N 27/605
. .
{
for determining moisture content, e.g. humidity
}
G01N 27/61
. .
Investigating the presence of flaws
Collapse
G01N 27/62
.
by investigating the ionisation of gases; by investigating electric discharges, e.g. emission of cathode (particle spectrometers per se H01J 49/00)
Collapse
G01N 27/622
. .
{
separating and identifying ionized molecules based on their mobility in a carrier gas, i.e. ion mobility spectrometry (mass spectrometry H01J 49/26)
}
G01N 27/624
. . .
{
using a non-uniform electric field, i.e. differential mobility spectrometry [DMS
}
 or high-field asymmetric-waveform ion-mobility spectrometry [FAIMS] ]
Collapse
G01N 27/626
. .
{
using heat to ionise a gas
}
G01N 27/628
. . .
{
and a beam of energy, e.g. laser enhanced ionisation
}
Collapse
G01N 27/64
. .
using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
{
(discharge tubes for measuring pressure of introduced gas or for detecting presence of gas H01J 41/02)
}
G01N 27/66
. . .
and measuring current or voltage
Collapse
G01N 27/68
. .
using electric discharge to ionise a gas
G01N 27/70
. . .
and measuring current or voltage
Collapse
G01N 27/72
.
by investigating magnetic variables
G01N 27/725
. .
{
by using magneto-acoustical effects or the Barkhausen effect
}
Collapse
G01N 27/74
. .
of fluids (G01N 24/00 takes precedence)
G01N 27/745
. . .
{
for detecting magnetic beads used in biochemical assays (concerning the assays G01N 33/54326; sensors therefor G01R 33/1269; automatic analysers therefor G01N 35/0098)
}
G01N 27/76
. . .
by investigating susceptibility
{
measuring susceptibility G01R 33/16
}
G01N 27/80
. .
for investigating mechanical hardness, e.g. by investigating saturation or remanence of ferromagnetic material
Collapse
G01N 27/82
. .
for investigating the presence of flaws
G01N 27/825
. . .
{
by using magnetic attraction force (G01N 27/84 takes precedence)
}
Collapse
G01N 27/83
. . .
by investigating stray magnetic fields
G01N 27/84
. . . .
by applying magnetic powder or magnetic ink
G01N 27/85
. . . .
using magnetographic methods
G01N 27/87
. . . .
using probes
Collapse
G01N 27/90
. . .
using eddy currents
{
(for measuring thickness G01B 7/06)
}
Collapse
G01N 27/9006
. . . .
{
Details
}
Collapse
G01N 27/9013
. . . . .
{
specially adapted for scanning
}
G01N 27/902
. . . . . .
{
by moving the sensors
}
G01N 27/9026
. . . . . .
{
by moving the material
}
G01N 27/9033
. . . . .
{
Sensors
}
G01N 27/904
. . . .
{
and more than one sensor
}
Collapse
G01N 27/9046
. . . .
{
by analysing electrical signals
}
G01N 27/9053
. . . . .
{
Compensating for probe to workpiece spacing
}
G01N 27/906
. . . . .
{
Compensating for velocity
}
G01N 27/9066
. . . . .
{
by measuring the propagation time, or delaying the signals
}
Collapse
G01N 27/9073
. . . .
{
Recording measured data (in general G01D)
}
G01N 27/908
. . . . .
{
synchronously with scanning
}
G01N 27/9086
. . . . .
{
Calibrating of recording device
}
G01N 27/9093
. . . .
{
arrangements for supporting or marking or rejecting, e.g. machines (sorting individual articles or bulk material fit to be sorted piece-meal, controlled indirectly by devices which detect or measure some feature of the article or material to be sorted B07C 5/00)
}
G01N 27/92
.
by investigating breakdown voltage (G01N 27/60, G01N 27/62 take precedence; testing of articles or specimens of solids or fluids for dielectric strength or breakdown voltage G01R 31/12)
Collapse
G01N 29/00
Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object (G01N 3/00 to G01N 27/00 take precedence; measuring or indicating of ultrasonic, sonic or infrasonic waves in general G01H; systems using the reflection or reradiation of acoustic waves, e.g. acoustic imaging, G01S 15/00; obtaining records by techniques analogous to photography using ultrasonic, sonic or infrasonic waves G03B 42/06;
{
medical diagnosis by ultrasounds A61B 8/00; generating or transmitting mechanical or acoustic waves B06B, G10K; seismic or acoustic prospecting or detecting G01V 1/00
}
)
Collapse
G01N 29/02
.
Analysing fluids (using acoustic emission techniques G01N 29/14;
{
constructional or flow details for analysing fluids G01N 29/222; optoacoustic fluid cells G01N 29/2425
}
)
G01N 29/022
. .
{
Fluid sensors based on micro-sensors, e.g. quartz crystal-microbalance (QCM), surface acoustic wave (SAW) devices, tuning forks, cantilevers, flexural plate wave (FPW) devices (micro-devices per se B81B)
}
G01N 29/024
. .
by measuring propagation velocity or propagation time of acoustic waves
G01N 29/028
. .
by measuring mechanical or acoustic impedance
G01N 29/032
. .
by measuring attenuation of acoustic waves
G01N 29/036
. .
by measuring frequency or resonance of acoustic waves
Collapse
G01N 29/04
.
Analysing solids (using acoustic emission techniques G01N 29/14)
G01N 29/041
. .
{
on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
}
G01N 29/043
. .
{
in the interior, e.g. by shear waves
}
Collapse
G01N 29/045
. .
{
by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks (measuring resonant frequency G01H 13/00; measuring strength properties by application of mechanical stress G01N 3/00)
}
G01N 29/046
. . .
{
using the echo of particles imparting on a surface; using acoustic emission of particles (investigating concentration of particle suspensions G01N 15/06; devices for measuring flow of solids in suspension G01F 1/74)
}
G01N 29/048
. .
{
Marking the faulty objects
}
Collapse
G01N 29/06
. .
Visualisation of the interior, e.g acoustic microscopy
{
(medical or veterinary diagnosis using sonic waves A61B 8/00; representation of acoustic wave distribution G01H 3/125, G01H 9/002; short-range imaging systems using reflection of acoustic waves G01S 15/8906)
}
Collapse
G01N 29/0609
. . .
{
Display arrangements, e.g. colour displays (indicating or recording in connection with measuring in general G01D)
}
Collapse
G01N 29/0618
. . . .
{
synchronised with scanning, e.g. in real-time
}
G01N 29/0627
. . . . .
{
Cathode-ray tube displays (in general G01R 13/20)
}
G01N 29/0636
. . . . .
{
with permanent recording
}
G01N 29/0645
. . . .
{
Display representation or displayed parameters, e.g. A-, B- or C-Scan
}
Collapse
G01N 29/0654
. . .
{
Imaging
}
G01N 29/0663
. . . .
{
by acoustic holography (acoustical holography per se G03H 3/00)
}
G01N 29/0672
. . . .
{
by acoustic tomography (medical tomography A61B 8/13)
}
G01N 29/0681
. . . .
{
by acoustic microscopy, e.g. scanning acoustic microscopy
}
G01N 29/069
. . . .
{
Defect imaging, localisation and sizing using, e.g. time of flight diffraction (TOFD), synthetic aperture focusing technique (SAFT), Amplituden-Laufzeit-Ortskurven (ALOK) technique
}
Collapse
G01N 29/07
. .
by measuring propagation velocity or propagation time of acoustic waves
G01N 29/075
. . .
{
by measuring or comparing phase angle (measuring frequencies or phase angles per se G01R 23/00, G01R 25/00)
}
G01N 29/09
. .
by measuring mechanical or acoustic impedance
G01N 29/11
. .
by measuring attenuation of acoustic waves
G01N 29/12
. .
by measuring frequency or resonance of acoustic waves
{
(measuring frequency or resonant frequency of mechanical vibrations or acoustic waves in general G01H 1/06, G01H 3/04, G01H 13/00; acoustic resonators G10K 11/04; vibration or shock testing of structures G01M 7/00)
}
G01N 29/14
.
using acoustic emission techniques
{
(echo of particles G01N 29/046; measuring mechanical vibrations or acoustic waves in solids in general G01H 1/00)
}
Collapse
G01N 29/22
.
Details,
{
e.g. general constructional or apparatus details
}
G01N 29/221
. .
{
Arrangements for directing or focusing the acoustical waves (electronic orientation or focusing G01N 29/262; sound directing or focusing G10K 11/26; mechanical steering of sound transducers or their beams G10K 11/35)
}
G01N 29/222
. .
{
Constructional or flow details for analysing fluids (optoacoustic fluid cells G01N 29/2425)
}
G01N 29/223
. .
{
Supports, positioning or alignment in fixed situation (mounting transducers per se G10K 11/004)
}
Collapse
G01N 29/225
. .
{
Supports, positioning or alignment in moving situation
}
G01N 29/226
. . .
{
Handheld or portable devices
}
G01N 29/227
. .
{
related to high pressure, tension or stress conditions
}
G01N 29/228
. .
{
related to high temperature conditions
}
Collapse
G01N 29/24
. .
Probes
{
(transducers for acoustic waves B06B, G10K; for measuring G01H)
}
G01N 29/2406
. . .
{
Electrostatic or capacitive probes, e.g. electret or cMUT-probes
}
G01N 29/2412
. . .
{
using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers (EMAT); (investigating the presence of flaws using eddy currents G01N 27/90, magnetostrictive transducers B06B 1/08, measuring magnetostrictive properties G01R 33/18)
}
Collapse
G01N 29/2418
. . .
{
using optoacoustic interaction with the material, e.g. laser radiation, photoacoustics (photoacoustic cells G01N 21/1702; measuring characteristics of vibrations by using radiation-sensitive means G01H 9/00; acousto-optical conversion techniques for short-range imaging G01S 15/8965; sound-producing devices using laser bundle G10K 15/046)
}
G01N 29/2425
. . . .
{
optoacoustic fluid cells therefor
}
G01N 29/2431
. . .
{
using other means for acoustic excitation, e.g. heat, microwaves, electron beams (sound producing devices not otherwise provided for G10K 15/04)
}
Collapse
G01N 29/2437
. . .
{
Piezoelectric probes
}
G01N 29/2443
. . . .
{
Quartz crystal probes
}
G01N 29/245
. . . .
{
Ceramic probes, e.g. lead zirconate titanate (PZT) probes
}
G01N 29/2456
. . .
{
Focusing probes (focusing arrangements G01N 29/221)
}
G01N 29/2462
. . .
{
Probes with waveguides, e.g. SAW devices
}
G01N 29/2468
. . .
{
Probes with delay lines
}
G01N 29/2475
. . .
{
Embedded probes, i.e. probes incorporated in objects to be inspected
}
G01N 29/2481
. . .
{
Wireless probes, e.g. with transponders or radio links
}
G01N 29/2487
. . .
{
Directing probes, e.g. angle probes (directing arrangements G01N 29/221)
}
G01N 29/2493
. . .
{
Wheel shaped probes
}
Collapse
G01N 29/26
. .
Arrangements for orientation or scanning
{
by relative movement of the head and the sensor (mechanical steering of sound transducers or their beams G10K 11/35)
}
G01N 29/262
. . .
{
by electronic orientation or focusing, e.g. with phased arrays (phased arrays per se G10K 11/34)
}
G01N 29/265
. . .
by moving the sensor relative to a stationary material
G01N 29/27
. . .
by moving the material relative to a stationary sensor
G01N 29/275
. . .
by moving both the sensor and the material
G01N 29/28
. .
providing acoustic coupling
{
e.g. water (impedance matching G10K 11/02)
}
G01N 29/30
. .
Arrangements for calibrating or comparing, e.g. with standard objects
Collapse
G01N 29/32
. .
Arrangements for suppressing undesired influences, e.g. temperature or pressure variations,
{
compensating for signal noise
}
G01N 29/323
. . .
{
compensating for pressure or tension variations
}
G01N 29/326
. . .
{
compensating for temperature variations
}
Collapse
G01N 29/34
.
Generating the ultrasonic, sonic or infrasonic waves,
{
e.g. electronic circuits specially adapted therefor
}
Collapse
G01N 29/341
. .
{
with time characteristics
}
G01N 29/343
. . .
{
pulse waves, e.g. particular sequence of pulses, bursts
}
G01N 29/345
. . .
{
continuous waves
}
G01N 29/346
. .
{
with amplitude characteristics, e.g. modulated signal
}
G01N 29/348
. .
{
with frequency characteristics, e.g. single frequency signals, chirp signals (measuring frequency of mechanical vibrations or acoustic waves in general G01H 1/06, G01H 3/04; measuring frequency or analysing frequency spectra G01R 23/00)
}
Collapse
G01N 29/36
.
Detecting the response signal,
{
e.g. electronic circuits specially adapted therefor
}
G01N 29/38
. .
by time filtering, e.g. using time gates
G01N 29/40
. .
by amplitude filtering, e.g. by applying a threshold
{
or by gain control
}
G01N 29/42
. .
by frequency filtering
{
or by tuning to resonant frequency
}
Collapse
G01N 29/44
.
Processing the detected response signal,
{
e.g. electronic circuits specially adapted therefor (digital signal processing per se G06F 17/00)
}
Collapse
G01N 29/4409
. .
{
by comparison
}
G01N 29/4418
. . .
{
with a model, e.g. best-fit, regression analysis
}
G01N 29/4427
. . .
{
with stored values, e.g. threshold values
}
G01N 29/4436
. . .
{
with a reference signal (amplitude comparison G01N 29/48)
}
G01N 29/4445
. .
{
Classification of defects
}
G01N 29/4454
. .
{
Signal recognition, e.g. specific values or portions, signal events, signatures
}
G01N 29/4463
. .
{
Signal correction, e.g. distance amplitude correction (DAC), distance gain size (DGS), noise filtering
}
G01N 29/4472
. .
{
Mathematical theories or simulation
}
G01N 29/4481
. .
{
Neural networks
}
G01N 29/449
. .
{
Statistical methods not provided for in G01N 29/4409, e.g. averaging, smoothing and interpolation
}
G01N 29/46
. .
by spectral analysis, e.g. Fourier analysis
{
or wavelet analysis (spectral signal processing per se G06F 17/14)
}
G01N 29/48
. .
by amplitude comparison
G01N 29/50
. .
using auto-correlation techniques or cross-correlation techniques
G01N 29/52
. .
using inversion methods other that spectral analysis, e.g. conjugated gradient inversion
Collapse
G01N 30/00
Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography (G01N 3/00 to G01N 29/00 take precedence; separation for the preparation or production of components B01D 15/00, B01D 53/02, B01D 53/14; solid sorbent compositions in general B01J 20/00; ion-exchange in general B01J 39/00 to B01J 49/00)
{
or field flow fractionation (for preparation or production of components B01D 21/00, B01D 43/00, B01D 45/00 or B03C)
}
NOTE
-
In this group, the following term is used with the meaning indicated:
- "conditioning" refers to the adjustment or control of environmental parameters, e.g. temperature or pressure.

G01N 30/0005
.
{
Field flow fractionation
}
Collapse
G01N 30/02
.
Column chromatography
Collapse
G01N 30/04
. .
Preparation or injection of sample to be analysed
Collapse
G01N 30/06
. . .
Preparation
G01N 30/08
. . . .
using an enricher
G01N 30/10
. . . .
using a splitter
G01N 30/12
. . . .
by evaporation
G01N 30/14
. . . .
by elimination of some components
Collapse
G01N 30/16
. . .
Injection (G01N 30/24 takes precedence)
G01N 30/18
. . . .
using a septum or microsyringe
G01N 30/20
. . . .
using a sampling valve
G01N 30/22
. . . .
in high pressure liquid systems
G01N 30/24
. . .
Automatic injection systems
Collapse
G01N 30/26
. .
Conditioning of the fluid carrier; Flow patterns
Collapse
G01N 30/28
. . .
Control of physical parameters of the fluid carrier
G01N 30/30
. . . .
of temperature
G01N 30/32
. . . .
of pressure or speed (G01N 30/36 takes precedence)
G01N 30/34
. . . .
of fluid composition, e.g. gradient (G01N 30/36 takes precedence)
G01N 30/36
. . . .
in high pressure liquid systems
Collapse
G01N 30/38
. . .
Flow patterns
G01N 30/40
. . . .
using back flushing
G01N 30/42
. . . .
using counter-current
G01N 30/44
. . . .
using recycling of the fraction to be distributed
Collapse
G01N 30/46
. . . .
using more than one column
{
(G01N 30/44 takes precedence)
}
Collapse
G01N 30/461
. . . . .
{
with serial coupling of separation columns
}
G01N 30/462
. . . . . .
{
with different eluents or with eluents in different states (G01N 30/463 takes precedence)
}
G01N 30/463
. . . . . .
{
for multidimensional chromatography
}
G01N 30/465
. . . . . .
{
with specially adapted interfaces between the columns
}
Collapse
G01N 30/466
. . . . .
{
with separation columns in parallel
}
G01N 30/467
. . . . . .
{
all columns being identical
}
G01N 30/468
. . . . .
{
involving switching between different column configurations
}
Collapse
G01N 30/48
. .
{
IPC7
}
 Sorbent materials therefor
WARNING
-
Groups G01N 30/48 and G01N 30/482 are no longer used for the classification of new documents as from September 1st, 2004. The backlog of these groups is being continuously reclassified to B01J 20/281 and subgroups

G01N 30/482
. . .
{
Solid sorbents
}
Collapse
G01N 30/50
. .
Conditioning of the sorbent material or stationary liquid
Collapse
G01N 30/52
. . .
Physical parameters
G01N 30/54
. . . .
Temperature
G01N 30/56
. . .
Packing methods or coating methods
G01N 30/58
. . .
the sorbent moving as a whole
Collapse
G01N 30/60
. .
Construction of the column
Collapse
G01N 30/6004
. . .
{
end pieces
}
G01N 30/6017
. . . .
{
Fluid distributors
}
G01N 30/6021
. . . .
{
Adjustable pistons
}
G01N 30/6026
. . . .
{
Fluid seals
}
G01N 30/603
. . . .
{
retaining the stationary phase, e.g. Frits
}
Collapse
G01N 30/6034
. . .
{
joining multiple columns
}
G01N 30/6039
. . . .
{
in series
}
G01N 30/6043
. . . .
{
in parallel
}
G01N 30/6047
. . .
{
with supporting means; Holders
}
Collapse
G01N 30/6052
. . .
{
body
}
G01N 30/606
. . . .
{
with fluid access or exit ports
}
G01N 30/6065
. . . .
{
with varying cross section
}
G01N 30/6069
. . . .
{
with compartments or bed substructure
}
Collapse
G01N 30/6073
. . . .
{
in open tubular form
}
G01N 30/6078
. . . . .
{
Capillaries
}
G01N 30/6082
. . . .
{
transparent to radiation
}
G01N 30/6086
. . . .
{
form designed to optimise dispersion
}
G01N 30/6091
. . .
{
Cartridges
}
G01N 30/6095
. . .
{
Micro-machined or nano-machined, e.g. micro- or nano-size
}
NOTE
-
B81 and subclass B81B relating to "micro-structural devices" and "micro-structural systems" and the Notes following the title of subclass B82B relating to "nano-structures"

Collapse
G01N 30/62
. .
Detectors specially adapted therefor
Collapse
G01N 30/64
. . .
Electrical detectors
G01N 30/66
. . . .
Thermal conductivity detectors
G01N 30/68
. . . .
Flame ionisation detectors
G01N 30/70
. . . .
Electron capture detectors
Collapse
G01N 30/72
. . .
Mass spectrometers
{
(mass spectrometers per se H01J 49/00)
}
Collapse
G01N 30/7206
. . . .
{
interfaced to gas chromatograph (interfaces in general for introducing or extracting samples to be analysed with specially adapted mass spectrometer, see H01J 49/04)
}
G01N 30/7213
. . . . .
{
splitting of the gaseous effluent
}
G01N 30/722
. . . . .
{
through a gas permeable barrier (membranes, porous layers)
}
Collapse
G01N 30/7233
. . . .
{
interfaced to liquid or superfluid chromatograph (interfaces in general for introducing or extracting samples to be analysed with specially adapted mass spectrometer, see H01J 49/04)
}
Collapse
G01N 30/724
. . . . .
{
Nebulising, aerosol formation or ionisation (spraying or atomising in general B05B)
}
G01N 30/7246
. . . . . .
{
by pneumatic means
}
G01N 30/7253
. . . . . .
{
by thermal means, e.g. thermospray
}
G01N 30/726
. . . . . .
{
by electrical or glow discharge
}
G01N 30/7266
. . . . . .
{
by electric field, e.g. electrospray
}
G01N 30/7273
. . . . .
{
Desolvation chambers
}
Collapse
G01N 30/728
. . . .
{
Intermediate storage of effluent, including condensation on surface
}
G01N 30/7286
. . . . .
{
the store moving as a whole, e.g. moving wire
}
G01N 30/7293
. . . .
{
Velocity or momentum separators
}
G01N 30/74
. . .
Optical detectors
{
measurement of intensity, velocity, spectral content, polarisation, or phase of infra-red, visible or ultra-violet light G01J
}
G01N 30/76
. . .
Acoustical detectors
{
measurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves G01H
}
G01N 30/78
. . .
using more than one detector
Collapse
G01N 30/80
. .
Fraction collectors
G01N 30/82
. . .
Automatic means therefor
G01N 30/84
. .
Preparation of the fraction to be distributed
Collapse
G01N 30/86
. .
Signal analysis
Collapse
G01N 30/8603
. . .
{
with integration or differentiation
}
G01N 30/8606
. . . .
{
Integration
}
G01N 30/861
. . . .
{
Differentiation
}
G01N 30/8613
. . . .
{
Dividing or multiplying by a constant
}
G01N 30/8617
. . . .
{
Filtering, e.g. Fourier filtering
}
Collapse
G01N 30/8624
. . .
{
Detection of slopes or peaks; baseline correction
}
G01N 30/8627
. . . .
{
Slopes
}
Collapse
G01N 30/8631
. . . .
{
Peaks
}
G01N 30/8634
. . . . .
{
Peak quality criteria
}
G01N 30/8637
. . . . .
{
Peak shape
}
G01N 30/8641
. . . .
{
Baseline
}
G01N 30/8644
. . . .
{
Data segmentation, e.g. time windows
}
Collapse
G01N 30/8651
. . .
{
Recording, data aquisition, archiving and storage
}
G01N 30/8655
. . . .
{
Details of data formats
}
Collapse
G01N 30/8658
. . .
{
Optimising operation parameters
}
G01N 30/8662
. . . .
{
Expert systems; optimising a large number of parameters
}
Collapse
G01N 30/8665
. . .
{
for calibrating the measuring apparatus
}
G01N 30/8668
. . . .
{
using retention times
}
G01N 30/8672
. . . .
{
not depending on an individual instrument, e.g. retention time indexes or calibration transfer
}
Collapse
G01N 30/8675
. . .
{
Evaluation, i.e. decoding of the signal into analytical information (for analysis of specific compounds see also G01N 30/88 and subgroups of G01N33; chemical libraries per se C40B)
}
G01N 30/8679
. . . .
{
Target compound analysis, i.e. whereby a limited number of peaks is analysed
}
G01N 30/8682
. . . .
{
Group type analysis, e.g. of components having structural properties in common
}
G01N 30/8686
. . . .
{
Fingerprinting, e.g. without prior knowledge of the sample components
}
G01N 30/8689
. . . .
{
Peak purity of co-eluting compounds
}
G01N 30/8693
. . .
{
Models, e.g. prediction of retention times, method development and validation
}
G01N 30/8696
. . .
{
Details of Software
}
G01N 30/88
. .
Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N 30/04 to G01N 30/86 (signal analysis systems per se G06F, G06G)
G01N 30/89
.
Inverse chromatography
Collapse
G01N 30/90
.
Plate chromatography, e.g. thin layer or paper chromatography
G01N 30/91
. .
Application of the sample
Collapse
G01N 30/92
. .
Construction of the plate
G01N 30/93
. . .
Application of the sorbent layer
G01N 30/94
. .
Development
G01N 30/95
. .
Detectors specially adapted therefor; Signal analysis
G01N 30/96
.
using ion-exchange (G01N 30/02, G01N 30/90 take precedence)

Next >>

This page is owned by Office of the Chief Communications Officer.
Last Modified: 11/26/2012 5:18:16 PM