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download between 0-24 hoursReleased: 1994
ISO 424:1994
ISO 424:1994-Photography — Processing chemicals — Specifications for anhydrous sodium carbonate and sodium carbonate monohydrate
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Standard´s number: | ISO 424:1994 |
Pages: | 4 |
Edition: | 2 |
Released: | 1994 |
Language: | English |
DESCRIPTION
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.