GB/T 12938-1991 standards english version

NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

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

Issued Date:

Implemented Date:

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The Standardization Administration of the People's Republic of China

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GB Standard Code	GB/T 12938-1991
Standard Category	China National Standards
GB Standard English Title	Determination of thiosulphate and other related residual chemicals in processed photographic materials--Iodine-amylose，methylene blue and silver sulphide densito-metric methods
GB Standard Chinese Title	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
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