BS ISO 5990:2000
Current
The latest, up-to-date edition.
Photography. Processing chemicals. Specifications for potassium sulfite, 650 g/l solution
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 Specific gravity or density
7.6 pH value
7.7 Mass fraction of thiosulfate (as S[2]O[3][2-])
7.8 Appearance of solution
Establishes criteria of purity of photographic-grade potassium sulfite, 650g/l aqueous solution, and specifies the tests to be used to determine the purity.
| Committee |
CPW/42
|
| DevelopmentNote |
Supersedes BS 6618(1985) and 99/703574 DC. (06/2002) Supersedes 94/408985 DC (07/2004) 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 sulfite, 650 g/I aqueous solution, and specifies the tests to be used to determine the purity.
| Standards | Relationship |
| ISO 5990:2000 | 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 10349-11:1992 | Photography — Photographic-grade chemicals — Test methods — Part 11: Determination of specific gravity |
| ISO 10349-12:1992 | Photography — Photographic-grade chemicals — Test methods — Part 12: Determination of density |
| ISO 10349-9:1992 | Photography — Photographic-grade chemicals — Test methods — Part 9: Reaction to ammoniacal silver nitrate |
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