ISO International Standard

Processing photographic wastes — Analysis of cyanides — Determination of hexacyanoferrate (II) and hexacyanoferrate (III) by spectrometry

ISO 7766:2003 establishes a test method for the determination of hexacyanoferrate(II) (ferrocyanide) and hexacyanoferrate(III) (ferricyanide), referred to hereafter as Fe(CN)6, in photographic processing effluents. Results are reported as hexacyanoferrate, Fe(CN)6.

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