BS 4427-3:1969
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate). Determination of iron content
Available format(s)
Hardcopy
Superseded date
29-09-1989
Language(s)
English
Published date
28-02-1969
Publisher
2,2′-Bipyridyl method applicable to sample, containing more than 0.001 per cent of iron.
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