This equipment is used to test the hardness of the coated glass in which the specimen is clamped on a turntable (number of revolutions of the standard ersion is 5 min-1). The test tool is fixed on a load arm also equipped with an adjustable weight so that the pressure exerted onto the specimen material can be regulated.
This tester is used for the assessment of the clean-ability, washing and scrubbing resistance of coated glass. The instrument (with leveling feet) is equipped with a cover plate on which the steel trough with an integrated specimen lamp ingdevice is placed. The linear to and fro motion is obtained from an electric motor and transmitted via an eccentric and cable arrangement. A presetting counter registers the cycles (= to and fro motions). The sample is then visually inspected and color values are taken as well.The standard referring to is ASTM D 2486.