BS ISO 3629:2000
Current
The latest, up-to-date edition.
Photography. Processing chemicals. Specifications for potassium metabisulfite
Hardcopy , PDF
English
21-05-2002
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Foreword
Introduction
1 Scope
2 Normative references
3 General
3.1 Physical properties
3.2 Hazardous properties
3.3 Storage
4 Requirements
5 Reagents and glassware
6 Sampling
7 Test methods
7.1 Assay
7.2 Mass fraction of heavy metals
7.3 Mass fraction of iron
7.4 Reaction to ammoniacal silver nitrate
7.5 pH value
7.6 Mass fraction of thiosulfate (as S[2]O[3][2-])
7.7 Appearance of solution
Gives criteria for the purity of photographic-grade potassium metabisulfite and specifies the tests to be used to determine the purity.
| Committee |
CPW/42
|
| DevelopmentNote |
Supersedes BS 3306(1978) and 99/703573 DC (06/2002) Reviewed and confirmed by BSI, August 2016. (07/2016)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard establishes criteria for the purity of photographic-grade potassium metabisulfite and specifies the tests to be used to determine the purity.
| Standards | Relationship |
| ISO 3629:2000 | Identical |
| ISO 10349-5:1992 | Photography — Photographic-grade chemicals — Test methods — Part 5: Determination of heavy metals and iron content |
| ISO 10349-1:2002 | Photography Photographic-grade chemicals Test methods Part 1: General |
| ISO 10349-9:1992 | Photography — Photographic-grade chemicals — Test methods — Part 9: Reaction to ammoniacal silver nitrate |
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