ISO 6851:1987
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
25-02-2019
French, English
26-11-1987
Important note : Users cannot be edited or removed once added to your Multi user PDF.
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.
| DocumentType |
Standard
|
| Pages |
4
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy |
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