This article presents a comprehensive introduction to differential-pressure method in terms of its methodology source, test condition and test capability so as to illustrate the scientific and precise nature of gas permeability test using differential-pressure method. Continue reading
Based on Labthink’s empirical research and its long term operation of equal-pressure method gas permeability testers, this article introduces advantages of equal-pressure method gas permeability testing in some special fields. Continue reading
this article analyses test duration of gas permeability test and concludes that system purge time should be included into test duration. At the same time, this article introduces the factors affecting transmitting equilibrium. Continue reading
Barrier property is one of the key parameters affecting shelf life of products, but traditional test methods for water vapor permeability still fall short not only in testing efficiency but also in terms of operation convenience. For that reason, a method that can rapidly determine water vapor permeability of package is introduced in this article. Continue reading
This article introduces the influences of humidity on gas barrier property of materials as well as the methods to control humidity. Continue reading