ISO 6851:1987
Withdrawn
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Photography — Processing waste — Determination of total amino nitrogen — Microdiffusion Kjeldahl method
Available format(s)
Hardcopy , PDF
Language(s)
French, English
Published date
26-11-1987
Withdrawn date
02-11-2025
Superseded by
€65.00
Excluding VAT
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Withdrawn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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