The method is applicable to products having an iron content between 0,2 % (m/m) and 10 % (m/m). ISO 9681 should be read in conjunction with ISO 4297. Specifies principle, reagents, apparatus, sampling and samples, procedure, and expression of results.
PUBLISHED
ISO 9681:1990
PROJECT
ISO/PRF 9681
50.20
Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Sep 30, 2026
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