GB/T 12938-1991
Determination of thiosulphate and other related residual chemicals in processed photographic materials--Iodine-amylose,methylene blue and silver sulphide densito-metric methods
BS 5711-10:1979
Methods of sampling and test for glycerol. Determination of arsenic content: silver diethyldithiocarbamate method
ISO 2465:1974
Glycerols for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric method