Measuring water vapour transmission through materials

Details Measuring water vapour transmission through materials Measuring water vapour transmission through materials

G - Physics

01

N

324/26

G01N 33/36 (2006.01) G01N 15/08 (2006.01)

Patent

CA 1227833

ABSTRACT MEASURING WATER VAPOR TRANSMISSION THROUGH MATERIALS The method and apparatus for testing the vapour transmission characteristics of a sheet material which comprises disposing said material at an interface between an aqueous solution and a plenum chamber, maintaining the temperature of the solution at a predetermined level, maintaining the temperature and humidity in the plenum chamber at a predetermined level and measuring the change in concentration of the solute in the solution over a predetermined period of time.

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