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    • Medical equipment in general
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    BS 2497-1:1968

    Specification for a reference zero for the calibration of pure-tone audiometers. Data for earphone coupler combinations maintained at certain standardizing laboratories

    British Standards Institution

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    BS 2497-2:1969

    Specification for a reference zero for the calibration of pure-tone audiometers. Data for certain earphones used in commercial practice

    British Standards Institution

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    BS 2497-3:1972

    Specification for a reference zero for the calibration of pure-tone audiometers. Data for a wide-band artificial ear complying with BS 4669

    British Standards Institution

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    BS 5081:1976

    Specification for sterile hypodermic syringes and needles for single use

    British Standards Institution

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    BS 5724-1:1979

    Medical electrical equipment. Specification for general safety requirements

    British Standards Institution

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    BS 5736-4:1981

    Evaluation of medical devices for biological hazards. Method of test for intracutaneous reactivity of extracts from medical devices

    British Standards Institution

    Product Logo   

    BS 2497-7:1988

    Standard reference zero for the calibration of pure tone air conduction audiometers. Specification for a standard reference zero at frequencies intermediate between those given in Parts 5 and 6 of BS 2497

    British Standards Institution

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    BS 2497-6:1988

    Acoustics. Reference zero for the calibration of audiometric equipment. Specification for a standard reference zero using an artificial ear complying with BS 4669

    British Standards Institution

    Product Logo   

    BS 2497-5:1988

    Standard reference zero for the calibration of pure tone air conduction audiometers. Specification for a standard reference zero using an acoustic coupler complying with BS 4668

    British Standards Institution

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    BS EN 60601-1:1990

    Medical electrical equipment. General requirements for safety

    British Standards Institution

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