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ISO 6851:1987

Photography — Processing waste — Determination of total amino nitrogen — Microdiffusion Kjeldahl method

Standard Details

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.

General Information

Status : WITHDRAWN
Standard Type: Main
Document No: ISO 6851:1987
Document Year: 1987
Pages: 4
Edition: 1

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WITHDRAWN
ISO 6851:1987
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