Electrolube IPA Pre-Saturated Cleaning Wipes IPA100 are tough lint-free wipes in a handy tub of 100 for any engineer or design engineer’s workbench. Made up of 70% Isopropnal and 30% demineralised water they are designed to wipe away the toughest of materials such as thermal pastes, greases, solder pastes and other spillages from the work bench or from the PCB during rework and repair.