MG Chemicals line of flux removers provide two choices for dissolving and rinsing flux residue: one safe on plastics formula for general flux removal, and an aggressive alternative for removing difficult baked on flux. Flux Remover for PC Boards is plastic safe and designed for general applications. It is effective at both dissolving flux and rinsing dissolved residues from boards. Heavy Duty Flux Remover is very aggressive. It dissolves the most stubbornly burnt on flux, however, it is not plastic safe, and therefore it is best used on the solder side of boards or for careful spot removal on populated boards.