permeability constant


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Related to permeability constant: Permeability Coefficient

per·me·a·bil·i·ty con·stant

a measure of the ease with which an ion can cross a unit area of membrane driven by a 1.0 mol/L difference in concentration; usually expressed in centimeters per second. Compare: permeability coefficient.

per·me·a·bil·i·ty con·stant

(pĕr'mē-ă-bil'i-tē kon'stănt)
A measure of the ease with which an ion can cross a unit area of membrane driven by a 1.0 m difference in concentration; usually expressed in centimeters per second.
Compare: permeability coefficient

permeability constant

A number that indicates the ratio between the concentration gradient across a membrane and the resulting flow of solution through the membrane. Permeability constant varies with the characteristics of the membrane and those of the solute.
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References in periodicals archive ?
Regulatory, agencies have used a permeability constant of 1.0 cm/hr and a bioavailability factor of 1.0 rather than measured or estimated values (Great Lakes Health Effects Division 1993).
([P.sub.c]): Permeability constant of composite film ([P.sub.p]): Permeability constant of prestine film
Table 3 presents the gas permeability constants of nitrogen gas for the clay hybrids and related samples.