scope:

This International Standard applies only to photographic films intended for storage of records; specifically, films with a base of safety cellulose ester or polyester (polyethylene terephthalate) having silver-gelatin emulsions, processed to produce a black-and-white silver image by negative or full-reversal processing. It applies to film processed by a monobath which includes thiosulfate as the fixing agent followed by a conventional wash. It also applies to silver films given a stabilizing treatment by partial or full conversion to silver sulfide, silver selenide or gold.