Differential pressure method and equal pressure method are both necessary in the injection liquid bag test. As it is a burden to companies and institutions to buy two sets of equipments, Labthink introduced PERME-DM2/330 double methods gas permeation testing instrument, as a better option for medical packaging system and injection liquid bag manufacturers. Continue reading
This article will introduce the test method of non-oxygen conventional gases permeability. It will also discuss the accuracy and the rationality of the test by theoretic analysis and practical test. Continue reading
Standard methods for measuring the permeability of oxygen and carbon dioxide gas and water vapor through flat polymer structures are described in ASTM D 3985-81 and E 96-80, respectively. Continue reading
This article take the Labthink s VAC-V1 Gas Permeability Tester as an example to show us a method of acquiring those two parameters and also tell us some remarkable points. Continue reading
Barrier parameter is usually hard to acquire at special temperatures. This article mainly tell us a concept of permeability parameters data fitting and relative theoretical principles. Continue reading