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BS ISO 5990:2000

Current
Current

The latest, up-to-date edition.

Photography. Processing chemicals. Specifications for potassium sulfite, 650 g/l solution
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

21-05-2002

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.

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.

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

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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