All plastic materials on Dispenser shall pass GWT.1. Glow wire Test 650 IEC 60335-2-5 cl. 30.2.3 for connections carrying < or= 0.2A and parts within 3mm ( if is more that 0.2A it should be GWT 850 and GWT 750)2. Glow wire test 550 IEC 60335-2-5 cl. 30.2.1 for other parts ( e.g.tank, grey body)