ISO 6851:1987 PDF
Photography — Processing waste — Determination of total amino nitrogen — Microdiffusion Kjeldahl method
Photography — Processing waste — Determination of total amino nitrogen — Microdiffusion Kjeldahl method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 4
- Дата публикации:
- 26 ноября 1987 г.
- Издание:
- ISO IS 6851 edition 1 version 1
- ICS:
- 13.030.30
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.
Технические детали
- Технический комитет
- ISO/TC 42 - Photography
- SKU
- ISO 6851:1987
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