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ISO 7766-1:1993

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

View Superseded by
withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

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Withdrawn date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

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.

DocumentType
Standard
Pages
5
PublisherName
International Organization for Standardization
Status
Withdrawn
SupersededBy

Standards Relationship
PIMA IT4.38 : 1998 Identical
BS ISO 7766-1:1993 Identical

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

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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Hardcopy - English
PDF - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
Hardcopy - English
PDF - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
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