BE698191A - - Google Patents
Info
- Publication number
- BE698191A BE698191A BE698191DA BE698191A BE 698191 A BE698191 A BE 698191A BE 698191D A BE698191D A BE 698191DA BE 698191 A BE698191 A BE 698191A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE698191 | 1967-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE698191A true BE698191A (de) | 1967-10-16 |
Family
ID=3850761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE698191D BE698191A (de) | 1967-05-09 | 1967-05-09 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE698191A (de) |
| FR (1) | FR1576455A (de) |
-
1967
- 1967-05-09 BE BE698191D patent/BE698191A/xx unknown
-
1968
- 1968-04-19 FR FR1576455D patent/FR1576455A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1576455A (de) | 1969-08-01 |