With increasing focus on energy efficient and sustainable building envelopes, the need to define the heat-air-moisture transport (hygrothermal) properties of building materials accurately cannot be overemphasized. New techniques have been evolving and being examined for this purpose. The Modified Cup Method is one such technique to determine the water vapour transmission properties of building materials. This paper uses C360M Water Vapor Transmission Rate Test System to test the water vapor transmission rate of an exterior wall coating, and introduces the test principle, test instrument specifications, application scope, and test procedure, in hope to provide a reference for further studies on water vapor permeability of building materials.

Barrier property testing of packages is one of the vital testing items for cosmetic packages. Barrier property is the permeability of packaging materials against gas, liquid and other permeable substances. Barrier property is the important factor affecting product quality during shelf life period. Barrier property testing includes permeability testing of oxygen, water vapor and fragrant gas through cosmetic packages. The unsaturated bonds in cosmetic ingredients are easy to be oxidized and deteriorated; the lost of [...]

Mositure Barrier of IV bag is the most important factor affecting the quality. Owing to the low barrier property of the content contact package, a barrier package is needed for prevention of moisture & oxygen permeation. Besides, nitrogen is applied to take place of the air between the inner package and barrier package. Therefore, oxygen transmission as well as nitrogen and moisture transmission should be tested. Labthink VAC-V series of differential pressure gas permeation testers can accomplish [...]

The research on encapsulation material of FOLED (flexible organic light emitting diodes) has been a focus of FOLED research both at home and aboard. How to measure water vapor transmission rate , oxygen and other active gases through FOLED  material is one of the important subjects for FOLED encapsulation.  Labthink Instruments Co., Ltd. , as the world renowned testing instrument and testing service provider, introduces the professional FOLED encapsulation material water vapor and gas transmission testing [...]