It is argued in this article that due to the reverse transmission of nitrogen gas in equal-pressure method, there is essential difference between differential-pressure method and equal-pressure method in terms of test principle. Continue reading
This article is about testing method and testing procedure of impact resistance testing in medical standard, and presents a brief description of the falling ball impact tester newly developed by Labthink special for medical package material. Continue reading
This article briefs on the heat-sealing technology employed in package industry at present. It presents a detailed evaluation method for heat-seal-ability and discusses about how to choose heat-sealing temperature in actual production. Continue reading
This article reviews the parameter definition as well as the development of test methods concerning water vapor permeability testing. Continue reading
Based on its introduction to the definition of traceability and the source of referential material in gas permeability testing methods, this article discusses the fundamental position of differential-pressure method in gas permeability testing. Continue reading