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  • ISO 7766-1:1993

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    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    Photography — Processing wastes — Analysis of cyanides — Part 1: Determination of hexacyanoferrate(II) and hexacyanoferrate(III) by spectrometry

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Withdrawn date:  27-02-2019

    Language(s):  English

    Published date:  21-01-1993

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    The principle of the test method specified is treating a sample of effluent, or diluted effluent, with a mixture of iron(II) and iron(III) ions. If Fe(CN)6 is present, a blue suspension will form. In the range of 1,0 mg/l to 10,0 mg/l, this suspension is stable and its absorbance is linear with its concentration. The absorbance is measured with a spectrometer, and the concentration determined from a previously established calibration.

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    Document Type Standard
    Publisher International Organization for Standardization
    Status Withdrawn
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    PIMA IT4.37 : 0 FOR PHOTOGRAPHY (PROCESSING) - EFFLUENTS - IDENTIFICATION AND ANALYTICAL METHODS
    ANSI/PIMA IT4.41:1999 PHOTOGRAPHY (PROCESSING) - FREE CYANIDE AT PH6, ANALYSIS FOR

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 385-2:1984 Laboratory glassware Burettes Part 2: Burettes for which no waiting time is specified
    ISO 835-4:1981 Laboratory glassware Graduated pipettes Part 4: Blow-out pipettes
    ISO 1042:1998 Laboratory glassware One-mark volumetric flasks
    ISO 648:2008 Laboratory glassware — Single-volume pipettes
    ISO 835-2:1981 Laboratory glassware Graduated pipettes Part 2: Pipettes for which no waiting time is specified
    ISO 385-1:1984 Laboratory glassware — Burettes — Part 1: General requirements
    ISO 835-3:1981 Laboratory glassware Graduated pipettes Part 3: Pipettes for which a waiting time of 15 s is specified
    ISO 835-1:1981 Laboratory glassware Graduated pipettes Part 1: General requirements
    ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
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