ISO 3621:1994
Photography — Processing chemicals — Specifications for sodium tetraborate decahydrate
Photography — Processing chemicals — Specifications for sodium tetraborate decahydrate
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 3
- Дата публикации:
- 8 декабря 1994 г.
- Издание:
- ISO IS 3621 edition 2 version 1
- ICS:
- 37.040.30
Cancels and replaces the first edition (1976). Establishes criteria for the purity of photographic-grade sodium tetraborate decahydrat and specifies the tests to be used to determine the purity.
Abstract
Overview
ISO 3621:1994 - Photography - Processing chemicals - Specifications for sodium tetraborate decahydrate - defines purity criteria and test methods for photographic‑grade sodium tetraborate decahydrate (Na2B4O7·10H2O). This second edition (1994) cancels and replaces the 1976 edition and is part of a series of ISO standards that set minimum quality and analytical requirements for used in film and paper processing.
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