ISO 7766-1:1993
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
27-02-2019
English
21-01-1993
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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Withdrawn
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| 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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