BE625231A - - Google Patents
Info
- Publication number
- BE625231A BE625231A BE625231DA BE625231A BE 625231 A BE625231 A BE 625231A BE 625231D A BE625231D A BE 625231DA BE 625231 A BE625231 A BE 625231A
- Authority
- BE
- Belgium
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/002—Determining nitrogen by transformation into ammonia, e.g. KJELDAHL method
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
- G01N21/293—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection with colour charts, graduated scales or turrets
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR881250A FR1315804A (en) | 1961-12-07 | 1961-12-07 | Method for the detection and determination in absolute value of oxygenated nitrogen compounds contained in industrial gases, in particular in coke oven gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE625231A true BE625231A (en) |
Family
ID=8768256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE625231D BE625231A (en) | 1961-12-07 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE625231A (en) |
| ES (1) | ES283113A1 (en) |
| FR (1) | FR1315804A (en) |
| NL (1) | NL286020A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4385910A (en) * | 1981-12-23 | 1983-05-31 | Caterpillar Tractor Co. | Apparatus and method for producing a gas having a controlled water vapor content |
-
0
- BE BE625231D patent/BE625231A/xx unknown
- NL NL286020D patent/NL286020A/xx unknown
-
1961
- 1961-12-07 FR FR881250A patent/FR1315804A/en not_active Expired
-
1962
- 1962-12-05 ES ES283113A patent/ES283113A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1315804A (en) | 1963-01-25 |
| NL286020A (en) | |
| ES283113A1 (en) | 1963-05-01 |