The waterproof material was covered on a round leather sample and fixed on
the opening of a metal container filled with 50 ml of water, after a certain period
of time,by measuring the sample quality changes, evaluate the water vapor
absorption properties of the sample.
ISO 17229; EN 420;EN ISO 20344 ; AS/NZS 2201.2 ; GB/T 20991 ; EN 344-1;
