Reference number
ISO 422:1994
© ISO 2025
International Standard
ISO 422:1994
Photography — Processing chemicals — Specifications for p-methylaminophenol sulfate
Edition 2
1994-10
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Published (Edition 2, 1994)
This publication was last reviewed and confirmed in 2021. Therefore this version remains current.

Abstract

Cancels and replaces the first edition (1976). Lays down criteria for the purity of photographic-grade p-methylaminophenol sulfate and specifies the test methods to be used to determine the purity.

General information

  • Status
     : Published
    Publication date
     : 1994-10
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 2
    Number of pages
     : 8
  • Technical Committee :
    ISO/TC 42
    ICS :
    37.040.30 
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