The pharmaceuticals are easily deliquesced after absorbing moisture, for which the packaging materials should be of high moisture barrier property. Aluminum plastic composite film is widely used in pharmaceutical packaging which can help extend the shelf life and guarantee the quality of the pharmaceuticals. However, the aluminum layer may be folded during package forming, product filling, heat sealing and transportation processes and as a result the barrier property (both oxygen barrier property and water vapor [...]

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.

WVTR is the abbreviation for water vapor transmission rate, which is defined as the constant rate at which water vapor permeates through a specimen film at specified conditions of temperature and relative humidity.

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 [...]