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ISO 811:1981

Withdrawn Date published:

Warning: Withdrawn Standard. This document has been withdrawn without replacement. You may wish to search for a more up to date equivalent.

Textile fabrics — Determination of resistance to water penetration — Hydrostatic pressure test

A specimen is subjected to a steadily increasing pressure of water on one face, under standard conditions, until penetration occurs in three places. The water pressure may be applied from below or from above the test specimen. The hydrostatic head supported by a fabric is a measure of the resistance to the passage of water through the fabric.

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  • BS 1771-1:1989

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    Fabrics for uniforms and workwear, Specification for fabrics from cellulosic fibres, synthetic fibres and blends

  • BS 2471:2005

    Textiles. Woven fabrics. Determination of mass per unit length and mass per unit area

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ISO 811:1981

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