Reference number
ISO 423:1994
International Standard
ISO 423:1994
Photography — Processing chemicals — Specifications for hydroquinone
Edition 2
1994-05
Read sample
ISO 423:1994
4432
Published (Edition 2, 1994)
This publication was last reviewed and confirmed in 2021. Therefore this version remains current.

ISO 423:1994

ISO 423:1994
4432
Language
Format
CHF 42
Convert Swiss francs (CHF) to your currency

Abstract

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

  •  : Published
     : 1994-05
    : International Standard confirmed [90.93]
  •  : 2
     : 6
  • ISO/TC 42
    37.040.30 
  • RSS updates

Life cycle

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