Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 12938-1991 |
Determination of thiosulphate and other related residual chemicals in processed photographic materials--Iodine-amylose,methylene blue and silver sulphide densito-metric methods 已加工的摄影材料中硫代硫酸盐及其他相关化学残留物的测定方法 碘-直链淀粉法、亚甲蓝法和硫化银密度法 |
China National Standards Determination thiosulphate other |
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