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ISO 3620:1994

Photography -- Processing chemicals -- Specifications for aluminium potassium sulfate

This standard has been reviewed and then confirmed in 2011 
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Establishes criteria for the purity of photographic-grade aluminium potassium sulfate dodecahydrate, AlK(SO4)2·12H2O, and specifies the tests to be used to determine the purity.


  • Edition: 2 (Monolingual) ICS: 37.040.30
    Status: Published Stage: 90.93 (2011-09-30)
    TC/SC: ISO/TC 42 Number of Pages: 4
  • Revises: ISO 3620:1976

  • No corrigenda or amendments available

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