The Rub Proofness Tester is designed to evaluate the colour fastness of light leathers against dry and wet rubbing, as well as to measure the transfer of colour onto the rubbing material. It helps determine the durability and surface performance of leather and similar materials under simulated usage conditions.

During testing, the specimen is rubbed by a rotating circular felt pad pressed against the surface under a specified load. The number of revolutions required to produce visible colour transfer or surface change is recorded to assess rub resistance.

The equipment can also be used to evaluate material durability under mild wet abrasion conditions, simulating real-life scuffing—such as the action of a damp hose on footwear insoles during wear. In this test, a rotating wet circular felt pad, covered with worsted repp fabric, rubs the specimen under a controlled contact force. The degree of damage is determined by measuring the mass loss of the specimen after a specified number of revolutions.