China National Standards
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'Photography--Process'
China GB Standards List

 GB/T 32696-2016  
Photography—Determination of residual thiosulfate and other related chemicals in processed photographic materials—Methods using iodine-amylose,methylene blue and silver sulfide

摄影 已加工过的摄影材料上残留的硫代硫酸盐和其它相关的化学品的测定方法 碘直链淀粉、亚甲基蓝和硫化银法

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