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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
Technical Specification
Speed of rotation of wheel | 75rpm |
Distance between axis of rotation and axes of bottle | 67mm |
Maximum number of bottle which can be mounted at a time | 6 |
Inner diameter of bottles | 30mm |
Speed of rotation of fan | 1425rpm |
Size of blades of fan | 75 x 90 mm |
Motor | ¼ HP 230 volt single phase AC |