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Chemical protective clothing standard test method development. Part 1. Penetration test method.

S Z Mansdorf1, S P Berardinelli

  • 1S.Z. Mansdorf and Associates, Cuyahoga Falls, OH 44223-1323.

American Industrial Hygiene Association Journal
|January 1, 1988
PubMed
Summary

This study validated the American Society for Testing and Materials (ASTM) F-903 liquid penetration test method. Results show high confidence in its precision for protective materials, with recommendations for improving accuracy.

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Occupational Safety

Background:

  • Protective materials are crucial for shielding against hazardous liquids.
  • Standardized testing methods are essential for evaluating material performance.
  • The American Society for Testing and Materials (ASTM) F-903 method is used to assess liquid penetration resistance.

Purpose of the Study:

  • To validate the relative precision of the ASTM F-903 test method.
  • To assess the interlaboratory agreement for measuring liquid penetration resistance.
  • To identify sources of variability in the ASTM F-903 test method.

Main Methods:

  • A "round-robin" interlaboratory study involving seven laboratories.
  • Three trials were conducted using five protective clothing materials.

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  • Five commercial liquids were used to challenge the protective materials.

    • Main Results:

    • High overall agreement among interlaboratory results was observed.
    • The ASTM F-903 method demonstrates relatively high confidence in its precision.
    • Systematic errors were identified as potential sources of reduced confidence for specific material-solvent combinations.

    Conclusions:

    • The ASTM F-903 test method is a precise tool for evaluating protective material resistance to liquid penetration.
    • Recommendations are provided to mitigate systematic errors and enhance test reliability.
    • Improvements include reducing test pressure, using a support screen, and employing fluorescent dyes.