• BS 7720:1995

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Specification for non-biological sterilization indicators equivalent to the Bowie and Dick test

    Available format(s):  Hardcopy, PDF

    Superseded date:  15-01-2001

    Language(s):  English

    Published date:  15-12-1995

    Publisher:  British Standards Institution

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

    Committees responsible
    Foreword
    Specification
    1 Scope
    2 References
    3 Definitions
    4 General system requirements
    5 Indicator system format
    6 Performance
    7 Packaging, labelling and instructions for use
    Annexes
    A (normative) Method of determining strength after
        steam sterilization
    B (normative) Method of estimating the visual difference
        between the colour of the substrate and the changed
        (or unchanged) indicator reagent on the substrate
    C (normative) Method of demonstrating uniform colour
        change on exposure to dry saturated steam
    D (normative) Method of compariang the sensitivity of
        the alternative pack system to the standard test
        pack system to the standard test pack when air is
        injected into the steam exposure apparatus
    E (normative) Method of comparing the sensitivity of the
        alternative pack system to the standard test pack
        when residual air is allowed to remain within the
        steam exposure apparatus
    F (normative) Method of determining the sensitivity of
        the indicator system under exposure to dry heat
    G (normative) Method of demonstrating the shelf life of
        the product
    H (normative) Steam exposure apparatus
    J (normative) Standard test pack
    K (informative) Air injection system
    L (normative) Standard test cycles
    Table
    B.1 Values of spectral product required of the
         reflectance photometer at the given values of
         wavelength and illuminance
    Figures
    1 Example of a suitable format for additional marking
    K.1 Air injection apparatus
    L.1 Example of sub-atmospheric pulsing cycle
    L.2 Example of sub- and super-atmospheric pulsing cycle
    List of references

    Abstract - (Show below) - (Hide below)

    For use as an alternative to the Bowie and Dick test for steam sterilizers for wrapped goods and porous loads.

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

    Committee CH/198
    Development Note SUPERSEDES BS 7720 1994. DRAFT FOR COMMENT 92/58870 DC
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

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

    BS EN 28601:1992 Specification for representation of dates and times in information interchange
    BS 1384-3:1985 Photographic density measurements Specification for spectral conditions
    BS EN ISO 9001:2015 Quality management systems. Requirements
    BS EN 22248:1993 Complete, filled transport packages. Method for determination of resistance to vertical impact by dropping
    BS EN 20187:1993 Paper, board and pulps. Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples
    BS 1384-4:1985 Photographic density measurements Specification for geometric conditions for reflection density
    BS 3970-3:1990 Sterilizing and disinfecting equipment for medical products Specification for steam sterilizers for wrapped goods and porous loads
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