ISO 417:1977 摄影技术.摄影材料加工用残留硫代硫酸盐和其它相关化学药品的测定.使用碘-链淀粉,亚甲蓝和硫化银的方法
Photography — Determination of thiosulphate and other residual chemicals in processed photographic films, plates and papers — Methylene blue photometric method and silver sulphide densitometric method