This equipment is used to measure the amount of steam released by a material through its tissue structure within a specified time.
Water Vapour Permeability STM 473
This test is mainly applicable to leather and fabric materials, and can measure the ability of these materials to absorb sweat on the wearer’s skin surface
There are six sample racks in the instrument. The desiccant is placed in the sample rack, and the test material is placed behind the sample rack and fixed with a screw cap. After the sample rack is weighed, the desiccant and sample materials are filled, and the sample rack is placed and rotated Within the structure. After7-8hours, weigh the entire sample rack again, the increased amount is the moisture permeability
The entire operation must becarried out in an air-conditioned environmentat 20℃and65% relative humidity