... indicating value 4.5N Coefficient of Friction(COF) Tester is applicable in coefficient of friction test to plastic films, foils, paper ... machines and packages' open property by testing Coefficient of friction.Coefficient of Friction(COF) Tester complies with ASTM D1894, ASTM D202, ... ASTM D4918,ISO 8295 and TAPPI T815.Coefficient of Friction(COF) Tester has below features:1. Micro computer controls ...