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download between 0-24 hoursReleased: 1994
ISO 423:1994
ISO 423:1994-Photography — Processing chemicals — Specifications for hydroquinone
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70.00 EUR
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French PDF
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French Hardcopy
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| Standard´s number: | ISO 423:1994 |
| Pages: | 6 |
| Edition: | 2 |
| Released: | 1994 |
DESCRIPTION
ISO 423:1994
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.