(0)G01N:5/9:
IPC6
SECTION G - PHYSICS
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR...
G01N
6/10
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G01N025/00 - G01N025/72
25
/
00
Investigating or analysing materials by the use of thermal means
(
G 01 N 3/00
to
G 01 N 23/00
take precedence)
25
/
02
•
by investigating changes of state or changes of phase; by investigating sintering
25
/
04
•
•
of melting point; of freezing point; of softening point
25
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06
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Analysis by measuring change of freezing point
25
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08
•
•
of boiling point
25
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10
•
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•
Analysis by measuring change of boiling point
25
/
12
•
•
of critical point; of other phase change
25
/
14
•
by using distillation, extraction, sublimation, condensation, freezing, or crystallisation (
G 01 N 25/02
takes precedence)
25
/
16
•
by investigating thermal coefficient of expansion
25
/
18
•
by investigating thermal conductivity (by calorimetry
G 01 N 25/20
; by measuring change of resistance of an electrically-heated body
G 01 N 27/18
)
25
/
20
•
by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
25
/
22
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•
on combustion or catalytic oxidation, e.g. of components of gas mixtures
25
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24
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using combustion tubes, e.g. for micro-analysis
25
/
26
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•
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using combustion with oxygen under pressure, e.g. in bomb calorimeter
25
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28
•
•
•
the rise in temperature of the gases resulting from combustion being measured directly
25
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30
•
•
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using electric temperature-responsive elements
25
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32
•
•
•
•
•
using thermoelectric elements
25
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34
•
•
•
•
using mechanical temperature-responsive elements, e.g. bimetallic
25
/
36
•
•
•
•
•
for investigating the composition of gas mixtures
25
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38
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•
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•
using the melting or combustion of a solid
25
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40
•
•
•
the heat developed being transferred to a flowing fluid
25
/
42
•
•
•
•
continuously
25
/
44
•
•
•
the heat developed being transferred to a fixed quantity of fluid
25
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46
•
•
•
•
for investigating the composition of gas mixtures
25
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48
•
•
on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
25
/
50
•
by investigating flash-point; by investigating explosibility
25
/
52
•
•
by determining flash-point of liquids
25
/
54
•
•
by determining explosibility
25
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56
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by investigating moisture content
25
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58
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•
by measuring changes of properties of the material due to heat, cold, or expansion
25
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60
•
•
•
for determining the wetness of steam
25
/
62
•
•
by psychrometric means, e.g. wet-and-dry-bulb thermometers
25
/
64
•
•
•
using electric temperature-responsive elements
25
/
66
•
•
by investigating dew-point
25
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68
•
•
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by varying the temperature of a condensing surface
25
/
70
•
•
•
by varying the temperature of the material, e.g. by compression, by expansion
25
/
72
•
Investigating presence of flaws (by investigating thermal conductivity
G 01 N 25/18
)
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