ArctiClean 60ml Kit 1 & 2 Thermal Grease Paste Compound Remover and Purifier. ArctiClean 1 Thermal Material Remover: ArctiClean 1 uses a proprietary combination of non-toxic biodegradable solvents to emulsify thermal greases or thermal pads. The citrus and soy based solvents in ArctiClean 1 match or exceed many hazardsous and volatile solvents such as fluorinated and chlorinated organic solvents, acetone, MEK (methyl ethyl ketone), mineral spirits, isopropyl alcohol, and toluene. ArctiClean 2 Thermal Surface Purifier: The cationic surfactants in ArctiClean 2 remove any residue left by the ArctiClean 1 leaving a pristine surface for the application of a new thermal interface material. It also incorporates advanced flash corrosion inhibitors that minimize the corrosion layer on copper and aluminum allowing for more intimate contact between the thermal interface material and the heatsink. Using ArctiClean 2 With Other Solvents: Most solvents and cleaning products leave residue on the CPU and heatsink that negatively affects the performance of any subsequently applied thermal interface material. ArctiClean 2 Thermal Surface Purifier removes the residue of citrus or petroleum based cleaners and inhibits flash corrosion on a copper or aluminum heatsink.