Photography. Determination of residual thiosulfate and other related chemicals in processed photographic materials. Methods using iodine-amylose, methylene blue and silver sulfide best-seller 7 Power input

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Protective earth current

This is a full revision of the standard to align it with BS 7121-1:2016 and address the causes of incidents that have occurred since the last edition was published

Deoxidation

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Photography. Determination of residual thiosulfate and other related chemicals in processed photographic materials. Methods using iodine-amylose, methylene blue and silver sulfide best-seller 7 Power input1 Scope 1. 1 This International Standard specifies test methods for the determination of residual thiosulfate and other related chemicals in processed photographic materials.