标准摘要
[中文适用范围]： 本国际标准制定了照相级无水焦亚硫酸钠的纯度标准，并规定了用于确定纯度的测试。 [外文原描述]： This International Standard establishes criteria for the purity of photographic-grade anhydrous sodium metabisulfite and specifies the tests to be used to determine the purity.
英文名称Photography — Processing chemicals — Specifications for anhydrous sodium metabisulfite