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Permeability definition

Permeability of a space means the ratio of the volume within that space which is assumed to be occupied by water to the total volume of that space.
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Permeability means the property of a material which permits movement of water through the material.
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Permeability of a space means the percentage of the volume of that space which can be occupied by water.
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Examples of Permeability in a sentence

  • Standard Test Methods for Water Permeability of Geotextiles by Permittivity.

  • Standard Test Method for Permeability of Granular Soils (Constant Head).

  • EU Method B.47 – Bovine Corneal Opacity and Permeability (BCOP) Test Method) and GLP certified - Good Laboratory Practices.

  • Hand protection Suitable chemical resistant gloves (EN 374) also with prolonged, direct contact(recommendation: protection index 6, corresponding > 480 minutes Permeability time (permeation) according to EN 374): e.g. nitrile rubber (0.4 mm), chloroprene rubber (0.5 mm), butyl rubber (0.7 mm).

  • Standard Test Method for Air Permeability of Textile Fabrics, incorporation by reference (IBR) approved January 27, 1983 for § 61.23(a).


More Definitions of Permeability

Permeability means the rate at which water moves through a unit area of soil, rock, or other material at hydraulic gradient of one.
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Permeability means the capacity of an aquifer or confining bed to transmit water. It is a property of the aquifer or confining bed and is independent of the force causing movement.
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Permeability means the property of a soil horizon that enables the soil to transmit gases, liquid, or other substances.
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Permeability means the rate at which a soil transmits water when saturated.
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Permeability means the ease with which fluid can move through a material and is measured by the rate of flow in suitable units.
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Permeability means the rate of movement of liquid through the soil.
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Permeability means the ease with which a porous material allows water and the solutes contained therein to flow through it. This is usually expressed in units of centimeters per second (cm/sec) and termed hydraulic conductivity. Soils and synthetic liners with a permeability for water of 1 x 10-7 cm/sec or less may be considered impermeable.
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