Measuring the WVTR of metalized films can be difficult. Inconsistencies in test results are typically attributed to the methods, conditions, and instruments used to conduct the tests. 

A study was conducted to develop a WVTR/RH profile of this seemingly Fickian material and compare the WVTR across various test methods and instruments. The objective was to minimize variation in lab to lab comparison of WVTR data and produce meaningful and comparable results. 

To learn more and to view the study results, see the application note in the Related Resources column.