• BS 7720:1994

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 indicator systems for use in the Bowie and Dick test with alternative test loads

    Available format(s):  Hardcopy, PDF

    Superseded date:  15-12-1995

    Language(s):  English

    Published date:  15-09-1994

    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 for determining strength after
         steam sterilization
    B (normative) Method for the estimation of 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 for comparing the sensitivity of
         the alternative 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 for determining the sensitivity
         of the indicator system under exposure to dry heat
    G (normative) Method for 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)

    Specifies requirements for systems for use in combination with specified test loads in steam sterilizers for wrapped goods.

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

    Committee CH/198
    Development Note DRAFT FOR COMMENT 92/58870 DC
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

    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 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
    BS 5750-1:1987 Quality systems Specification for design/development, production, installation and servicing
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