Increase/decrease heavy water vapor permeability tester

This product is based on the testing principle of cup type water vapor permeation, referring toASTM E96，GB/T 1037Standard design and manufacturing, providing a wide range and high efficiency water vapor permeability testing for low, medium, and high water vapor barrier materials.

Suitable for testing the water vapor transmission performance of films, sheets, paper, fabrics, non-woven fabrics, and related materials in the fields of food, medicine, medical devices, and daily chemical products.