Currently various standards and test methods are applied in the permeability testing of films. However, there is no uniform standard for the accuracy of the test data. As a result, it is hard to evaluate the competency of the testing organizations or laboratories, which has become an obstacle in quality control for the film manufacturers and users. In order to provide a valuable reference for the data accuracy, Labthink launched the permeability proficiency service, which was officially opened ...This story is related to the following:Test and Measuring InstrumentsSearch for suppliers of: Permeability Testers | Testers