ISO 5792:1978

Sulphuric acid for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric method

Describes a method applicable to products having aresenic contents equal to or greater than 0,1 mg/kg. As far as principle, the reagents and apparatus to be used are concerned, reference is made to ISO 2590, with some modifications added. For example, the reduction of arsenic by zinc is carried out in sulphuric acid medium. Provides information on the expression of results and the particulars to be included in the test report. The annex lists ISO publications covering the same subject.