Based on standard ASTM D 3985, this article briefs on coulometric oxygen permeability testing of film and sheet materials. It also presents a detailed introduction about the principal and operating procedure of coulometric testing. Continue reading
This article briefs on testing principle of water vapor permeability testing of electrolytic analysis method and its application in the testing of medicine package materials. Continue reading
In recent years, transparent package has become a trend. The satisfaction of both transparency and high barrier property of package is not easy. This article elaborates on the reason for the popularization of transparent package, as well as the types and applications of high barrier property material with high grade of transparency. Continue reading
This article presents a detailed introduction on the two testing methods- differential pressure method and equal pressure method; and gives some suggestions of the instrument selection and purchase. Continue reading
The article presents a detailed introduction to definition, application, difference and conversion of permeability testing indexes. Application is also provided. Continue reading