EN 1149-3 Test1 Triboelectric Charging Decay Tester for Protective Clothing Triboelectric Charging Decay Tester Introduction The Triboelectric Charging Tester is professionally designed to determine charging decay using the triboelectric charging method according to EN 1149-3 standard. Test materials are charged by rubbing against cylindrical rods mounted on a vertically running slider. The electrical field strength from the charge generated on the test material is observed