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ISO 423:1994

Photography — Processing chemicals — Specifications for hydroquinone

Standard Details

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

Status : Published
Standard Type: Main
Document No: ISO 423:1994
Document Year: 1994
Pages: 6
Edition: 2

Life Cycle

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ISO 423:1994

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