
Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate). Determination of iron content
出版:British Standards Institution

專(zhuān)家解讀視頻
2,2$2N-Bipyridyl method applicable to sample, containing more than 0.001 per cent of iron.
? British Standards Institution 2013
ISO R 852:1968 - Equivalent