Apparatus for measuring transmission of volatile substances thro

Details Apparatus for measuring transmission of volatile substances thro Apparatus for measuring transmission of volatile substances thro

1991-02-04

1992-01-21

Chapman, John E

Measuring and testing

With fluid pressure

Porosity or permeability

G01N 1508

Patent

active

050818635

ABSTRACT:
An apparatus for measuring gas transmission through films and membranes comprises upper and lower staging sections with sample sites defined therebetween. The upper and lower staging sections communicate with sample sites of transmitted gas and carrier gases and a volatile substance can be positioned in sample sites of the upper staging section.

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