ISO 3620:1994
Photography — Processing chemicals — Specifications for aluminium potassium sulfate
Photography — Processing chemicals — Specifications for aluminium potassium sulfate
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 4
- Дата публикации:
- 15 декабря 1994 г.
- Издание:
- ISO IS 3620 edition 2 version 1
- ICS:
- 37.040.30
Establishes criteria for the purity of photographic-grade aluminium potassium sulfate dodecahydrate, AlK(SO4)2·12H2O, and specifies the tests to be used to determine the purity.
Abstract
Overview
ISO 3620:1994 sets the international standards for the purity of photographic-grade aluminium potassium sulfate dodecahydrate (AlK(SO4)2·12H2O). This chemical is crucial in photographic processing solutions, and the standard defines strict and to ensure consistent quality. Developed by ISO Technical Committee TC 42 (Photography), this second edition revises and updates the first edition from 1976, focusing on chemical and physical requirements linked to photographic performance.
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