ISO 423:1994 Preview

Photography -- Processing chemicals -- Specifications for hydroquinone

Establishes criteria for the purity and describes the test methods for identity tests, residue after ignition, heavy metals content, iron content, appearance of solution. Annex A describes preparation of the standard ammonium cerium(IV) hexanitrate solution.


General information

  • Current status : Published
    Publication date : 1994-04
  • Edition : 2
    Number of pages : 6
  • :
    ISO/TC 42
    Photography
  • 37.040.30
    Photographic chemicals

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