WPA-100
 Water Permeability Analyzer

The WPA-100, water permeability analyzer is the latest innovation from VTI.  The WPA-100 measures water vapor transmission rate (WVTR) through films, blisters, foil, and various packaging material. This completely automated system requires minimal effort from the technician other than loading the sample and recalling experimental protocol from an archived template. Temperature ranges from 23° C to 50° C and humidity ranges from 2% to 98% RH. Experiments are viewed on the monitor in real time. Data generation is accomplished using a very simple Excel macro that allows tabular and graphical representation. Experiments yield information for initial moisture content, drying, kinetics, diffusion and steady state permeability.