Abstract Preview

This International Standard specifies a method for the determination of the total organic nitrogen, as well as any

ammoniacal nitrogen, present in photographic processing wastes by the Kjeldahl method.

Total Kjeldahl nitrogen can be determined in photographic processing wastes in the range of 10 mg/l to 200 mg/l as

ammonia, or in the range of 8 mg/l to 160 mg/l in terms of nitrogen. If ammoniacal nitrogen (see ISO 6853) is

determined separately and subtracted, the concentration of organic amino nitrogen can be established.


General information

  • Status :  Published
    Publication date : 2001-12
  • Edition : 2
    Number of pages : 10
  • :
    ISO/TC 42
    Photography
  • 13.030.30
    Special wastes
    37.040.30
    Photographic chemicals

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