Oxygen permeability of contact lens, which has a direct influence on wearer amenity, is an important index of contact lens. This article deals with the importance, influencing factors and testing method of oxygen permeability of contact lens. Continue reading
This article briefs on the testing principle of gravimetric method and main influencing factors of testing data of earlier gravimetric method instrument; and further introduces the improvement and breakthrough of automatic gravimetric method water vapor permeability tester in details. Continue reading
Efforts aimed at conserving resources and containing costs have encouraged device manufacturers to seek alternative materials that can meet device performance requirements while using less material. Continue reading
Based on the requirements of material gas permeability testing, this article introduces testing methods of gas permeability testing and air permeability testing. Continue reading
This article details on the test method of bottle body that has complete bottle-cap sealing. Continue reading