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  • BS ISO 5990:2000

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    Photography. Processing chemicals. Specifications for potassium sulfite, 650 g/l solution

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  21-05-2002

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    Establishes criteria of purity of photographic-grade potassium sulfite, 650g/l aqueous solution, and specifies the tests to be used to determine the purity.

    General Product Information - (Show below) - (Hide below)

    Committee CPW/42
    Development Note 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)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    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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