PERMATRAN-W® 3/60 Is the most recent addition in permeation test systems for measuring Water Vapor Transmission Rates of barrier films and packages. The Permatran-W 3/60 was designed to provide you with fast, accurate answers for all of your packaging needs. Ideal systems for production and QC/QA testing applications. This system incorporates the latest in high sensitivity sensor design and features 6 test cells for flexibility and speed. Includes precise RH & temperature measurement and control, user selectable sensitivity, package testing capabilities and N.I.S.T. (National Institute of Standard and Technology) traceable calibration films.