ISO 422:1994-Photography — Processing chemicals — Specifications for p-methylaminophenol sulfate
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Standard´s number:
ISO 422:1994
Pages:
8
Edition:
2
Released:
1994
Language:
English
DESCRIPTION
ISO 422:1994
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.