Imperial Green Lapping Film should be used to prepare TRL(55) rubber sliders prior to use and to reconditon rubber sliders between tests.
The conditioning procedure ensures that you begin each test with the rubber slider in the same state. It smooths the working edge and removes any particles/debris remaining from the previous test surface.
The conditioning procedure is designed to eliminate any variation in results arising from differences in the slider condition. For more information consult our tutorial.
The UK Slip Resistance Group (UKSRG) no longer recommend Green Lapping Film when verifying the Portable Skid Resistance Tester. Green Lapping Film should be used for conditioning purposes only.