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ISO 424:1994 (R2021)
Photography — Processing chemicals — Specifications for anhydrous sodium carbonate and sodium carbonate monohydrate
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Summary
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.
Notes
90.93 : Norme internationale confirmée
Technical characteristics
| Publisher | International Organization for Standardization (ISO) |
| Publication Date | 10/20/1994 |
| Confirmation Date | 06/05/2021 |
| Edition | 2 |
| Page Count | 4 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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20/10/1994
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