ISO 6851:1987
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ISO 6851:1987
13360

Abstract 

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 

  •  :  Withdrawn
     : 1987-11
  •  : 1
     : 4
  •  : ISO/TC 42 Photography
  •  :
    13.030.30 Special wastes
    37.040.30 Photographic chemicals

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