Water Vapour Permeability Tester

Water vapour permeability of leather is evaluated by clamping a circular test specimen over the mouth of a bottle containing a solid desiccant and subjecting it to a rapid current of air. The air inside the bottle is circulated in weight if the desiccant in motion. The increase in weight of the bottle over a specified interval of time gives the quantitative measure of the water vapor permeability of the leather sample under test.

Related standard

• Iup/25 : official method of international union of leather Chemists society
• Is15298 (part - I) : method of physical testing of leather
• ISO 8782-1 : 1998