ISO 424:1994

Current Revision
Photography -- Processing chemicals -- Specifications for anhydrous sodium carbonate and sodium carbonate monohydrate

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ISO 424:1994

Photography -- Processing chemicals -- Specifications for anhydrous sodium carbonate and sodium carbonate monohydrate

PUBLISH DATE 1994
ISO 424:1994

Cancels and replaces the first edition (1976).

Establishes criteria for the purity of photographic-grade anhydrous sodium carbonate and sodium carbonate monohydrate and specifies the test methods to be used to determine the purity.

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