Barrier Test
Barrier Test Overview
Fast Results

Ultra Barrier TestHow Long Does a WVTR Measurement Take?


  • Measurement time depends on rate of diffusion and lag time.  Multi-layered structures often take longer.


  • Rough estimate:  For a film with a WVTR = 0.01 g/(m2-day), the testing will require approximately:



100 hrsCRDS
100 hrsPermatran (poor accuracy at 0.01)
150 hrsAquatran (requires individual zero)
800 hrsCalcium Test




Test Conditions



WVTR Measurement, Aquatran Tests


WVTR, Calcium Test


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