ISO 6851:1987
Withdrawn
View Superseded by
Photography — Processing waste — Determination of total amino nitrogen — Microdiffusion Kjeldahl method
Hardcopy , PDF
French, English
11-26-1987
11-02-2025
Describes a method for determining the total organic nitrogen and any ammoniacal nitrogen present in photographic processing waste. This amino nitrogen is converted to ammonia which is subsequently determined by absorption into boric acid in a microdiffusion cell along with any ammonia originally present.
| Committee |
ISO/TC 42
|
| DocumentType |
Standard
|
| Pages |
4
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy |
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