Photography. Thermally processed silver microfilm. Specifications for stability Ingestion-build-134498 What is BS EN IEC

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Photography. Thermally processed silver microfilm. Specifications for stability Ingestion-build-134498 What is BS EN IEC1 Scope This International Standard establishes specifications for the stability of photographic films intended for storage of records; specifically, microfilms with a base of safety polyester [poly(ethylene terephthalate)] having predominantly silver behenate salts dispersed in nongelatinous emulsions, and thermally processed to produce a black and white silver image. This International Standard applies to thermally processed silver (TPS) microfilms