G
SECTION G — PHYSICS
  
INSTRUMENTS
 G01
MEASURING (counting G06M); TESTING
 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 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 sensitivity, graininess, or density of photographic materials G03C 5/02; testing component parts of nuclear reactors G21C 17/00)
 G01N

Note(s)

  1. 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.
  2. Attention is drawn to the Notes following the title of class G01.
 G01N 1/00
Sampling; Preparing specimens for investigation (handling materials for automatic analysis G01N 35/00)
 G01N 1/02
·  Devices for withdrawing samples (for medical or veterinary purposes A61; obtaining samples of soil or well fluids E21B 49/00)
 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
 G01N 1/10
·  ·  in the liquid or fluent state
 G01N 1/12
·  ·  ·  Dippers; Dredgers
 G01N 1/14
·  ·  ·  Suction devices, e.g. pumps; Ejector devices
 G01N 1/16
·  ·  ·  with provision for intake at several levels (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)
 G01N 1/20
·  ·  ·  for flowing or falling materials (G01N 1/12, G01N 1/14 take precedence)
 G01N 1/22
·  ·  in the gaseous state
 G01N 1/24
·  ·  ·  Suction devices
 G01N 1/26
·  ·  ·  with provision for intake from several spaces
 G01N 1/28
·  Preparing specimens for investigation (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)
 G01N 1/30
·  ·  Staining; Impregnating
 G01N 1/32
·  ·  Polishing; Etching
 G01N 1/34
·  ·  Purifying; Cleaning
 G01N 3/00
Investigating strength properties of solid materials by application of mechanical stress (strain gauges G01B; measuring stress in general G01L 1/00)
 G01N 3/00

Note(s)

This group covers the stressing of materials not only below but also beyond the elastic limit, e.g. until breaking occurs.

 G01N 3/02
·  Details
 G01N 3/04
·  ·  Chucks
 G01N 3/06
·  ·  Special adaptations of indicating or recording means (indicating or recording means for measuring in general G01D)
 G01N 3/08
·  by applying steady tensile or compressive forces (G01N 3/28 takes precedence)
 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 spring tension (G01N 3/18 takes precedence)
 G01N 3/16
·  ·  applied through gearing (G01N 3/18 takes precedence)
 G01N 3/18
·  ·  Performing tests 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
 G01N 3/30
·  by applying a single impulsive force, e.g. by falling weight
 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, H04R)
 G01N 3/34
·  ·  generated by mechanical means, e.g. hammer blows
 G01N 3/36
·  ·  generated by pneumatic or hydraulic means
 G01N 3/38
·  ·  generated by electromagnetic means
 G01N 3/40
·  Investigating hardness or rebound hardness
 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
 G01N 3/56
·  Investigating resistance to wear or abrasion
 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
 G01N 3/62
·  Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
 G01N 5/00
Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid (G01N 9/00 takes precedence)
 G01N 5/02
·  by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
 G01N 5/04
·  by removing a component, e.g. by evaporation, and weighing the remainder
 G01N 7/00
Analysing materials by measuring the pressure or volume of a gas or vapour
 G01N 7/02
·  by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
 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
 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
 G01N 7/14
·  by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
 G01N 7/16
·  ·  by heating the material
 G01N 7/18
·  ·  by allowing the material to react
 G01N 7/20
·  ·  ·  the reaction being fermentation
 G01N 7/22
·  ·  ·  ·  of dough
 G01N 9/00
Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity (weighing apparatus per se G01G)
 G01N 9/02
·  by measuring weight of a known volume
 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
 G01N 9/10
·  by observing bodies wholly or partially immersed in fluid materials
 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
 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
 G01N 9/26
·  by measuring pressure differences
 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
 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-G01N 9/32)
 G01N 11/00
Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
 G01N 11/02
·  by measuring flow of the material
 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
 G01N 11/10
·  by moving a body within the material
 G01N 11/12
·  ·  by measuring rising or falling speed of the body; by measuring penetration of wedged gauges (G01N 11/16 takes precedence)
 G01N 11/14
·  ·  by using rotary bodies, e.g. vane (G01N 11/16 takes precedence)
 G01N 11/16
·  ·  by measuring damping effect upon oscillatory body
 G01N 13/00
Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
 G01N 13/02
·  Investigating surface tension of liquids
 G01N 13/04
·  Investigating osmotic effects
 G01N 15/00
Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials (identification of micro-organisms C12Q)
 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)
 G01N 15/04
·  Investigating sedimentation of particle suspensions
 G01N 15/05
·  ·  in blood  [4]
 G01N 15/06
·  Investigating concentration of particle suspensions (G01N 15/04, G01N 15/10 take precedence; by weighing G01N 5/00)  [3]
 G01N 15/07
( transferred to G01N 15/10-G01N 15/14 )
 G01N 15/08
·  Investigating permeability, pore volume, or surface area of porous materials
 G01N 15/10
·  Investigating individual particles  [4]
 G01N 15/12
·  ·  Coulter-counters  [4]
 G01N 15/14
·  ·  Electro-optical investigation  [4]
 G01N 17/00
Investigating resistance of materials to the weather, to corrosion, or to light
 G01N 19/00
Investigating materials by mechanical methods (G01N 3/00-G01N 17/00 take precedence)
 G01N 19/02
·  Measuring coefficient of friction between materials
 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
 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-G01N 19/00 take precedence; by investigating a spectrum G01J 3/00; measuring stress in general G01L 1/00; optical elements of measuring instruments G02B)
 G01N 21/01
·  Arrangements or apparatus for facilitating the optical investigation  [3]
 G01N 21/03
·  ·  Cuvette constructions  [3]
 G01N 21/05
·  ·  ·  Flow-through cuvettes (G01N 21/09 takes precedence; handling fluid samples G01N 1/10)  [3]
 G01N 21/07
·  ·  ·  Centrifugal type cuvettes (G01N 21/09 takes precedence; centrifuges per se B04B)  [3]
 G01N 21/09
·  ·  ·  adapted to resist hostile environments or corrosive or abrasive materials  [3]
 G01N 21/11
·  ·  Filling or emptying of cuvettes  [3]
 G01N 21/13
·  ·  Moving of cuvettes or solid samples to or from the investigating station  [3]
 G01N 21/15
·  ·  Preventing contamination of the components of the optical system or obstruction of the light path  [3]
 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)  [3]
 G01N 21/19
·  ·  Dichroism  [3]
 G01N 21/21
·  ·  Polarisation-affecting properties (G01N 21/19 takes precedence)  [3]
 G01N 21/23
·  ·  ·  Bi-refringence  [3]
 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  [3]
 G01N 21/27
·  ·  ·  using photo-electric detection (G01N 21/31 takes precedence)  [3]
 G01N 21/29
·  ·  ·  using visual detection (G01N 21/31 takes precedence)  [3]
 G01N 21/31
·  ·  ·  Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry  [3]
 G01N 21/33
·  ·  ·  ·  using ultra-violet light (G01N 21/39 takes precedence)  [3]
 G01N 21/35
·  ·  ·  ·  using infra-red light (G01N 21/39 takes precedence)  [3]
 G01N 21/37
·  ·  ·  ·  ·  using pneumatic detection  [3]
 G01N 21/39
·  ·  ·  ·  using tunable lasers  [3]
 G01N 21/41
·  ·  Refractivity; Phase-affecting properties, e.g. optical path length (G01N 21/21 takes precedence)  [3]
 G01N 21/43
·  ·  ·  by measuring critical angle  [3]
 G01N 21/45
·  ·  ·  using interferometric methods; using Schlieren methods  [3]
 G01N 21/47
·  ·  Scattering, i.e. diffuse reflection (G01N 21/25, G01N 21/41 take precedence)  [3]
 G01N 21/49
·  ·  ·  within a body or fluid  [3]
 G01N 21/51
·  ·  ·  ·  inside a container, e.g. in an ampoule (G01N 21/53 takes precedence; checking containers for cleanness B67C 1/14)  [3]
 G01N 21/53
·  ·  ·  ·  within a flowing fluid, e.g. smoke (alarm devices actuated by smoke G08B 17/10)  [3]
 G01N 21/55
·  ·  Specular reflectivity  [3]
 G01N 21/57
·  ·  ·  Measuring gloss  [3]
 G01N 21/59
·  ·  Transmissivity (G01N 21/25 takes precedence)  [3]
 G01N 21/61
·  ·  ·  Non-dispersive gas analysers  [3]
 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  [3]
 G01N 21/63
·  ·  optically excited  [3]
 G01N 21/64
·  ·  ·  Fluorescence; Phosphorescence  [3]
 G01N 21/65
·  ·  ·  Raman scattering  [3]
 G01N 21/66
·  ·  electrically excited, e.g. electroluminescence  [3]
 G01N 21/67
·  ·  ·  using electric arcs or discharges (spark gaps per se H01T)  [3]
 G01N 21/68
·  ·  ·  using high frequency electric fields  [3]
 G01N 21/69
·  ·  ·  specially adapted for fluids  [3]
 G01N 21/70
·  ·  mechanically excited, e.g. triboluminescence  [3]
 G01N 21/71
·  ·  thermally excited  [3]
 G01N 21/72
·  ·  ·  using flame burners  [3]
 G01N 21/73
·  ·  ·  using plasma burners or torches  [3]
 G01N 21/74
·  ·  ·  using flameless atomising, e.g. graphite furnaces  [3]
 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)  [3]
 G01N 21/76
·  ·  Chemiluminescence; Bioluminescence  [3]
 G01N 21/77
·  ·  by observing the effect on a chemical indicator  [3]
 G01N 21/78
·  ·  ·  producing a change of colour  [3]
 G01N 21/79
·  ·  ·  ·  Photometric titration  [3]
 G01N 21/80
·  ·  ·  ·  Indicating pH value  [3]
 G01N 21/81
·  ·  ·  ·  Indicating humidity  [3]
 G01N 21/82
·  ·  ·  producing a precipitate or turbidity  [3]
 G01N 21/83
·  ·  ·  ·  Turbidimetric titration  [3]
 G01N 21/84
·  Systems specially adapted for particular applications  [3]
 G01N 21/85
·  ·  Investigating moving fluids or granular solids  [3]
 G01N 21/86
·  ·  Investigating moving sheets (G01N 21/89 takes precedence)  [3]
 G01N 21/87
·  ·  Investigating jewels (G01N 21/88 takes precedence)  [3]
 G01N 21/88
·  ·  Investigating the presence of flaws or contamination  [3]
 G01N 21/89
·  ·  ·  in moving material, e.g. paper, textiles (G01N 21/90, G01N 21/91 take precedence)  [3]
 G01N 21/90
·  ·  ·  in a container or its contents (G01N 21/91 takes precedence)  [3]
 G01N 21/91
·  ·  ·  using penetration of dyes, e.g. fluorescent ink  [3]
 G01N 22/00
Investigating or analysing materials by the use of microwaves (G01N 3/00-G01N 17/00, G01N 24/00 take precedence)  [3]
 G01N 22/02
·  Investigating the presence of flaws  [3]
 G01N 22/04
·  Investigating moisture content  [3]
 G01N 23/00
Investigating or analysing materials by the use of wave or particle radiation not covered by group G01N 21/00 or G01N 22/00, e.g. X-rays, neutrons (G01N 3/00-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 23/02
·  by transmitting the radiation through the material
 G01N 23/04
·  ·  and forming a picture (electron microscopes per se H01J)
 G01N 23/05
·  ·  ·  using neutrons  [3]
 G01N 23/06
·  ·  and measuring the absorption
 G01N 23/08
·  ·  ·  using electric detection means
 G01N 23/09
·  ·  ·  ·  the radiation being neutrons  [3]
 G01N 23/10
·  ·  ·  ·  the material being confined in a container (G01N 23/09 takes precedence)  [3]
 G01N 23/12
·  ·  ·  ·  the material being a flowing fluid or a flowing granular solid (G01N 23/09 takes precedence)  [3]
 G01N 23/14
·  ·  ·  ·  ·  specially adapted for controlling or monitoring operations or for signalling
 G01N 23/16
·  ·  ·  ·  the material being a moving sheet (G01N 23/09, G01N 23/18 take precedence)  [3]
 G01N 23/18
·  ·  ·  ·  Investigating the presence of flaws (G01N 23/09 takes precedence)  [3]
 G01N 23/20
·  by using diffraction of the radiation, e.g. for investigating crystal structure; by using reflection of the radiation
 G01N 23/201
·  ·  by measuring small-angle scattering  [2]
 G01N 23/202
·  ·  ·  using neutrons  [3]
 G01N 23/203
·  ·  by measuring back scattering  [2]
 G01N 23/204
·  ·  ·  using neutrons  [3]
 G01N 23/205
·  ·  by means of diffraction cameras (G01N 23/201 takes precedence)  [2]
 G01N 23/206
·  ·  ·  the radiation being neutrons  [3]
 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 takes precedence; spectrometry of detected or measured radiation intensity G01T 1/36)  [2]
 G01N 23/22
·  by measuring secondary emission  [2]
 G01N 23/221
·  ·  by activation analysis  [2]
 G01N 23/222
·  ·  ·  using neutrons  [3]
 G01N 23/223
·  ·  by irradiating the sample with X-rays and by measuring X-ray fluorescence  [2]
 G01N 23/225
·  ·  using electron or ion microprobe (electron or ion-beam tubes for microprobe analysis H01J 37/00)  [2]
 G01N 23/227
·  ·  by measuring photoelectric effect, e.g. Auger electrons  [2]
 G01N 24/00
Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects (electronic or nuclear magnetic resonance arrangements in general G01R 33/20)  [3]
 G01N 24/02
·  Details  [3]
 G01N 24/04
·  ·  Probes  [3]
 G01N 24/06
·  ·  Generation, homogenisation or stabilisation of magnetic fields (regulating magnetic variables in general G05F 7/00; electromagnets in general H01F 7/06)  [3]
 G01N 24/08
·  by using nuclear magnetic resonance (G01N 24/12 takes precedence)  [3]
 G01N 24/10
·  by using electron paramagnetic resonance (G01N 24/12 takes precedence)  [3]
 G01N 24/12
·  by using double resonance  [3]
 G01N 24/14
·  by using cyclotron resonance  [3]
 G01N 25/00
Investigating or analysing materials by the use of thermal means (G01N 3/00-G01N 23/00 take precedence)
 G01N 25/02
·  by investigating changes of state or changes of phase; by investigating sintering
 G01N 25/04
·  ·  of melting point; of freezing point; of softening point
 G01N 25/06
·  ·  ·  Analysis by measuring change of freezing point
 G01N 25/08
·  ·  of boiling point
 G01N 25/10
·  ·  ·  Analysis by measuring change of boiling point
 G01N 25/12
·  ·  of critical point; of other phase change
 G01N 25/14
·  by using distillation, extraction, sublimation, condensation, freezing, or crystallisation (G01N 25/02 takes precedence)
 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)
 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)
 G01N 25/22
·  ·  on combustion or catalytic oxidation, e.g. of components of gas mixtures
 G01N 25/24
·  ·  ·  using combustion tubes, e.g. for micro-analysis
 G01N 25/26
·  ·  ·  using combustion with oxygen under pressure, e.g. in bomb calorimeter
 G01N 25/28
·  ·  ·  the rise in temperature of the gases resulting from combustion being measured directly
 G01N 25/30
·  ·  ·  ·  using electric temperature-responsive elements
 G01N 25/32
·  ·  ·  ·  ·  using thermoelectric elements
 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
 G01N 25/38
·  ·  ·  ·  using the melting or combustion of a solid
 G01N 25/40
·  ·  ·  the heat developed being transferred to a flowing fluid
 G01N 25/42
·  ·  ·  ·  continuously
 G01N 25/44
·  ·  ·  the heat developed being transferred to a fixed quantity of fluid
 G01N 25/46
·  ·  ·  ·  for investigating the composition of gas mixtures
 G01N 25/48
·  ·  on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
 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
 G01N 25/56
·  by investigating moisture content
 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
 G01N 25/62
·  ·  by psychrometric means, e.g. wet-and-dry-bulb thermometers
 G01N 25/64
·  ·  ·  using electric temperature-responsive elements
 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)
 G01N 27/00
Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (G01N 3/00-G01N 25/00 take precedence; measurement or testing of electric or magnetic variables or of electric or magnetic properties of materials G01R)
 G01N 27/02
·  by investigating impedance
 G01N 27/04
·  ·  by investigating resistance
 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  [2]
 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)
 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
 G01N 27/14
·  ·  ·  of an electrically-heated body in dependence upon change of temperature
 G01N 27/16
·  ·  ·  ·  caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
 G01N 27/18
·  ·  ·  ·  caused by changes in the thermal conductivity of a surrounding material to be tested (G01N 27/20 takes precedence)
 G01N 27/20
·  ·  ·  Investigating the presence of flaws
 G01N 27/22
·  ·  by investigating capacitance
 G01N 27/24
·  ·  ·  Investigating the presence of flaws
 G01N 27/26
·  by investigating electrochemical variables; by using electrolysis or electrophoresis (investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography, G01N 30/00; electrochemical processes or apparatus in general B01J; standard cells H01M 6/28)
 G01N 27/28
·  ·  Details, e.g. containers
 G01N 27/30
·  ·  ·  Electrodes, e.g. testing electrodes
 G01N 27/32
·  ·  ·  ·  Calomel electrodes
 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 27/42
·  ·  by measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte
 G01N 27/44
·  ·  ·  using electrolysis to generate a reagent, e.g. for titration
 G01N 27/46
·  ·  by measuring currents or voltages in voltaic cells (G01N 27/02 takes precedence)
 G01N 27/48
·  ·  ·  Polarography, i.e. measuring changes in current under a slowly-varying voltage
 G01N 27/50
·  ·  ·  due to effect at an electrode (G01N 27/48 takes precedence)
 G01N 27/52
·  ·  ·  ·  using oxidation of an electrode; using oxidation-reduction effects
 G01N 27/54
·  ·  ·  ·  using depolarisation at an electrode
 G01N 27/56
·  ·  ·  due to effect in the electrolyte, e.g. for pH measurement (G01N 27/48 takes precedence)
 G01N 27/58
·  ·  ·  ·  Concentration cells
 G01N 27/60
·  by investigating electrostatic variables (by investigating capacitance G01N 27/22)
 G01N 27/61
·  ·  Investigating the presence of flaws  [3]
 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)
 G01N 27/64
·  ·  using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
 G01N 27/66
·  ·  ·  and measuring current or voltage
 G01N 27/68
·  ·  using electric discharge to ionise a gas
 G01N 27/70
·  ·  ·  and measuring current or voltage
 G01N 27/72
·  by investigating magnetic variables
 G01N 27/74
·  ·  of fluids (G01N 24/00 takes precedence)
 G01N 27/76
·  ·  ·  by investigating susceptibility
 G01N 27/80
·  ·  for investigating mechanical hardness, e.g. by investigating saturation or remanence of ferromagnetic material
 G01N 27/82
·  ·  for investigating the presence of flaws
 G01N 27/83
·  ·  ·  by investigating stray magnetic fields  [3]
 G01N 27/84
·  ·  ·  ·  by applying magnetic powder or magnetic ink  [3]
 G01N 27/85
·  ·  ·  ·  using magnetographic methods  [3]
 G01N 27/87
·  ·  ·  ·  using probes  [3]
 G01N 27/90
·  ·  ·  using eddy currents  [3]
 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)  [3]
 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-G01N 27/00 take precedence; measuring or indicating of ultrasonic, sonic or infrasonic waves in general G01H; imaging of objects using sonar G01S 15/00; obtaining records by techniques analogous to photography using ultrasonic, sonic or infrasonic waves G03B 42/06)
 G01N 29/02
·  for analysing fluids
 G01N 29/04
·  for investigating presence of flaws in solids
 G01N 29/06
·  ·  Visualisation of the interior  [4]
 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-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-B01J 49/00)  [4]
 G01N 30/00

Note(s)

In this group, the following term is used with the meaning indicated: [4]

  • "conditioning" means the adjustment or control of environmental parameters, e.g. temperature or pressure. [4]

 G01N 30/02
·  Column chromatography  [4]
 G01N 30/04
·  ·  Preparation or injection of sample to be analysed  [4]
 G01N 30/06
·  ·  ·  Preparation  [4]
 G01N 30/08
·  ·  ·  ·  using an enricher  [4]
 G01N 30/10
·  ·  ·  ·  using a splitter  [4]
 G01N 30/12
·  ·  ·  ·  by evaporation  [4]
 G01N 30/14
·  ·  ·  ·  by elimination of some components  [4]
 G01N 30/16
·  ·  ·  Injection (G01N 30/24 takes precedence)  [4]
 G01N 30/18
·  ·  ·  ·  using a septum or microsyringe  [4]
 G01N 30/20
·  ·  ·  ·  using a sampling valve  [4]
 G01N 30/22
·  ·  ·  ·  in high pressure liquid systems  [4]
 G01N 30/24
·  ·  ·  Automatic injection systems  [4]
 G01N 30/26
·  ·  Conditioning of the fluid carrier; Flow patterns  [4]
 G01N 30/28
·  ·  ·  Control of physical parameters of the fluid carrier  [4]
 G01N 30/30
·  ·  ·  ·  of temperature  [4]
 G01N 30/32
·  ·  ·  ·  of pressure or speed (G01N 30/36 takes precedence)  [4]
 G01N 30/34
·  ·  ·  ·  of fluid composition, e.g. gradient (G01N 30/36 takes precedence)  [4]
 G01N 30/36
·  ·  ·  ·  in high pressure liquid systems  [4]
 G01N 30/38
·  ·  ·  Flow patterns  [4]
 G01N 30/40
·  ·  ·  ·  using back flushing  [4]
 G01N 30/42
·  ·  ·  ·  using counter-current  [4]
 G01N 30/44
·  ·  ·  ·  using recycling of the fraction to be distributed  [4]
 G01N 30/46
·  ·  ·  ·  using more than one column  [4]
 G01N 30/48
·  ·  Sorbent materials therefor  [4]
 G01N 30/50
·  ·  Conditioning of the sorbent material or stationary liquid  [4]
 G01N 30/52
·  ·  ·  Physical parameters  [4]
 G01N 30/54
·  ·  ·  ·  Temperature  [4]
 G01N 30/56
·  ·  ·  Packing methods or coating methods  [4]
 G01N 30/58
·  ·  ·  the sorbent moving as a whole  [4]
 G01N 30/60
·  ·  Construction of the column  [4]
 G01N 30/62
·  ·  Detectors specially adapted therefor  [4]
 G01N 30/64
·  ·  ·  Electrical detectors  [4]
 G01N 30/66
·  ·  ·  ·  Thermal conductivity detectors  [4]
 G01N 30/68
·  ·  ·  ·  Flame ionisation detectors  [4]
 G01N 30/70
·  ·  ·  ·  Electron capture detectors (G01N 30/68 takes precedence)  [4]
 G01N 30/72
·  ·  ·  Mass spectrometers  [4]
 G01N 30/74
·  ·  ·  Optical detectors  [4]
 G01N 30/76
·  ·  ·  Acoustical detectors  [4]
 G01N 30/78
·  ·  ·  using more than one detector  [4]
 G01N 30/80
·  ·  Fraction collectors  [4]
 G01N 30/82
·  ·  ·  Automatic means therefor  [4]
 G01N 30/84
·  ·  Preparation of the fraction to be distributed  [4]
 G01N 30/86
·  ·  Signal analysis  [4]
 G01N 30/88
·  ·  Integrated analysis systems specially adapted therefor, not covered by a single one of groups G01N 30/04-G01N 30/86 (signal analysis systems per se G06F, G06G)  [4]
 G01N 30/90
·  Plate chromatography, e.g. thin layer or paper chromatography  [4]
 G01N 30/91
·  ·  Application of the sample  [4]
 G01N 30/92
·  ·  Construction of the plate  [4]
 G01N 30/93
·  ·  ·  Application of the sorbent layer  [4]
 G01N 30/94
·  ·  Development  [4]
 G01N 30/95
·  ·  Detectors specially adapted therefor; Signal analysis  [4]
 G01N 30/96
·  using ion-exchange (G01N 30/02, G01N 30/90 take precedence)  [4]
 G01N 31/00
Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroups (measuring or testing processes involving enzymes or micro-organisms C12Q 1/00); Apparatus specially adapted for such methods
 G01N 31/00

Note(s)

The observation of the progress of the reactions specified below by any of the methods specified in groups G01N 3/00-G01N 29/00, if this is of major importance, is covered by the group concerned.

 G01N 31/02
·  using precipitation
 G01N 31/04 - 
G01N 31/08
( transferred to G01N 30/00 )
 G01N 31/10
·  using catalysis
 G01N 31/12
·  using combustion (G01N 25/20 takes precedence)
 G01N 31/16
·  using titration
 G01N 31/18
·  ·  Burettes specially adapted for titration (burettes in general B01L 3/02)
 G01N 31/20
·  using micro-analysis, e.g. drop reaction
 G01N 31/22
·  using chemical indicators (G01N 31/02 takes precedence)
 G01N 33/00
Investigating or analysing materials by specific methods not covered by the preceding groups
 G01N 33/02
·  food
 G01N 33/03
·  ·  edible oils or edible fats  [4]
 G01N 33/04
·  ·  dairy products
 G01N 33/06
·  ·  ·  Determining fat content, e.g. by butyrometer
 G01N 33/08
·  ·  eggs, e.g. by candling
 G01N 33/10
·  ·  starch-containing substances, e.g. dough
 G01N 33/12
·  ·  meat; fish
 G01N 33/14
·  ·  beverages
 G01N 33/15
·  medicinal preparations  [3]
 G01N 33/18
·  water
 G01N 33/20
·  metals
 G01N 33/22
·  fuels; explosives
 G01N 33/24
·  earth materials (G01N 33/42 takes precedence)
 G01N 33/26
·  oils; viscous liquids; paints; inks (G01N 33/22 takes precedence)
 G01N 33/28
·  ·  oils (edible oils or edible fats G01N 33/03)
 G01N 33/30
·  ·  ·  for lubricating properties
 G01N 33/32
·  ·  paints; inks
 G01N 33/34
·  paper
 G01N 33/36
·  textiles
 G01N 33/38
·  concrete; lime; mortar; gypsum; bricks; ceramics; glass
 G01N 33/40
·  grinding-materials
 G01N 33/42
·  road-making materials (G01N 33/38 takes precedence)
 G01N 33/44
·  resins; plastics; rubber; leather
 G01N 33/46
·  wood
 G01N 33/48
·  biological material, e.g. blood, urine (G01N 33/02-G01N 33/14, G01N 33/26, G01N 33/44, G01N 33/46 take precedence; determining the germinating capacity of seeds A01C 1/02); Haemocytometers (counting blood corpuscules distributed over a surface by scanning the surface G06M 11/02)  [3]
 G01N 33/483
·  ·  Physical analysis of biological material  [4]
 G01N 33/487
·  ·  ·  of liquid biological material  [4]
 G01N 33/49
·  ·  ·  ·  blood  [4]
 G01N 33/493
·  ·  ·  ·  urine  [4]
 G01N 33/497
·  ·  ·  of gaseous biological material, e.g. breath  [4]
 G01N 33/50
·  ·  Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing (measuring or testing processes other than immunological involving enzymes or micro-organisms, compositions or test papers therefor; processes of forming such compositions, condition responsive control in microbiological or enzymological processes C12Q)  [3]
 G01N 33/52 - 
G01N 33/96

Note(s)

  1. In this group, the following expression is used with the meaning indicated:
    • "involving", when used in relation to a material, includes the testing for the material as well as employing the material as a determinant or reactant in a test for a different material. [3]
  2. In groups G01N 33/52-G01N 33/96, in the absence of an indication to the contrary, an invention is classified in the last appropriate place. [3]
 G01N 33/52
·  ·  ·  Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper  [3]
 G01N 33/53
·  ·  ·  Immunoassay; Biospecific binding assay; Materials therefor (medicinal preparations containing antigens or antibodies A61K; haptens in general, see the relevant places in class C07; proteins in general C07K)  [4]
 G01N 33/531
·  ·  ·  ·  Production of immunochemical test materials  [4]
 G01N 33/532
·  ·  ·  ·  ·  Production of labelled immunochemicals  [4]
 G01N 33/533
·  ·  ·  ·  ·  ·  with fluorescent label  [4]
 G01N 33/534
·  ·  ·  ·  ·  ·  with radioactive label  [4]
 G01N 33/535
·  ·  ·  ·  ·  ·  with enzyme label  [4]
 G01N 33/536
·  ·  ·  ·  with immune complex formed in liquid phase  [4]
 G01N 33/537
·  ·  ·  ·  ·  with separation of immune complex from unbound antigen or antibody  [4]
 G01N 33/538
·  ·  ·  ·  ·  ·  by sorbent column, particles or resin strip  [4]
 G01N 33/539
·  ·  ·  ·  ·  ·  involving precipitating reagent  [4]
 G01N 33/54
( transferred to G01N 33/53 )
 G01N 33/541
·  ·  ·  ·  ·  ·  ·  Double or second antibody  [4]
 G01N 33/542
·  ·  ·  ·  ·  with steric inhibition or signal modification, e.g. fluorescent quenching  [4]
 G01N 33/543
·  ·  ·  ·  with an insoluble carrier for immobilising immunochemicals  [4]
 G01N 33/544
·  ·  ·  ·  ·  the carrier being organic  [4]
 G01N 33/545
·  ·  ·  ·  ·  ·  Synthetic resin  [4]
 G01N 33/546
·  ·  ·  ·  ·  ·  ·  as water suspendable particles  [4]
 G01N 33/547
·  ·  ·  ·  ·  ·  ·  with antigen or antibody attached to the carrier via a bridging agent  [4]
 G01N 33/548
·  ·  ·  ·  ·  ·  Carbohydrates, e.g. dextran  [4]
 G01N 33/549
·  ·  ·  ·  ·  ·  with antigen or antibody entrapped within the carrier  [4]
 G01N 33/551
·  ·  ·  ·  ·  the carrier being inorganic  [4]
 G01N 33/552
·  ·  ·  ·  ·  ·  Glass or silica  [4]
 G01N 33/553
·  ·  ·  ·  ·  ·  Metal or metal coated  [4]
 G01N 33/554
·  ·  ·  ·  ·  the carrier being a biological cell or cell fragment, e.g. bacteria, yeast cells  [4]
 G01N 33/555
·  ·  ·  ·  ·  ·  Red blood cell  [4]
 G01N 33/556
·  ·  ·  ·  ·  ·  ·  Fixed or stabilised red blood cell  [4]
 G01N 33/557
·  ·  ·  ·  using kinetic measurement, i.e. time rate of progress of an antigen-antibody interaction  [4]
 G01N 33/558
·  ·  ·  ·  using diffusion or migration of antigen or antibody  [4]
 G01N 33/559
·  ·  ·  ·  ·  through a gel, e.g. Ouchterlony technique  [4]
 G01N 33/56
( transferred to G01N 33/53 )
 G01N 33/561
·  ·  ·  ·  ·  Immunoelectrophoresis  [4]
 G01N 33/563
·  ·  ·  ·  involving antibody fragments  [4]
 G01N 33/564
·  ·  ·  ·  for pre-existing immune complex or autoimmune disease  [4]
 G01N 33/566
·  ·  ·  ·  using specific carrier or receptor proteins as ligand binding reagent  [4]
 G01N 33/567
·  ·  ·  ·  ·  utilising isolate of tissue or organ as binding agent  [4]
 G01N 33/569
·  ·  ·  ·  for micro-organisms, e.g. protozoa, bacteria, viruses  [4]
 G01N 33/571
·  ·  ·  ·  ·  for venereal disease, e.g. syphilis, gonorrhoea, herpes  [4]
 G01N 33/573
·  ·  ·  ·  for enzymes or isoenzymes  [4]
 G01N 33/574
·  ·  ·  ·  for cancer  [4]
 G01N 33/576
·  ·  ·  ·  for hepatitis  [4]
 G01N 33/577
·  ·  ·  ·  involving monoclonal antibodies  [4]
 G01N 33/579
·  ·  ·  involving limulus lysate  [4]
 G01N 33/58
·  ·  ·  involving labelled substances (G01N 33/53 takes precedence; for testing in vivo A61K 49/00)  [3]
 G01N 33/60
·  ·  ·  ·  involving radioactive labelled substances (tracers G21H 5/02)  [3]
 G01N 33/62
·  ·  ·  involving urea  [3]
 G01N 33/64
·  ·  ·  involving ketones  [3]
 G01N 33/66
·  ·  ·  involving blood sugars, e.g. galactose  [3]
 G01N 33/68
·  ·  ·  involving proteins, peptides or amino acids  [3]
 G01N 33/70
·  ·  ·  involving creatine or creatinine  [3]
 G01N 33/72
·  ·  ·  involving blood pigments, e.g. hemoglobin, bilirubin  [3]
 G01N 33/74
·  ·  ·  involving hormones  [3]
 G01N 33/76
·  ·  ·  ·  Human chorionic gonadotropin  [3]
 G01N 33/78
·  ·  ·  ·  Thyroid gland hormones  [3]
 G01N 33/80
·  ·  ·  involving blood groups or blood types  [3]
 G01N 33/82
·  ·  ·  involving vitamins  [3]
 G01N 33/84
·  ·  ·  involving inorganic compounds or pH  [3]
 G01N 33/86
·  ·  ·  involving blood coagulating time  [3]
 G01N 33/88
·  ·  ·  involving prostaglandins  [3]
 G01N 33/90
·  ·  ·  involving iron binding capacity of blood  [3]
 G01N 33/92
·  ·  ·  involving lipids, e.g. cholesterol  [3]
 G01N 33/94
·  ·  ·  involving narcotics  [3]
 G01N 33/96
·  ·  ·  involving blood or serum control standard  [3]
 G01N 33/98
·  ·  ·  involving alcohol, e.g. ethanol in breath  [4]
 G01N 35/00
Automatic analysis not limited to methods or materials provided for in a single one of the preceding groups; Handling materials therefor  [3]
 G01N 35/02
·  using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations  [3]
 G01N 35/04
·  ·  Details of the conveyer system  [3]
 G01N 35/06
·  ·  with sample transferring devices  [3]
 G01N 35/08
·  using a stream of discrete samples flowing along a tube system  [3]
 G01N 37/00
Details not covered by any preceding group  [3]