REGULAR USE: Use SUPERCLEAN DD1 CLEANER which is a clear, odourless solution that is added to the coolant, 48 hours before the coolant is due to be changed at a level of 1% of sump volume.  Machining continues uninterrupted whilst SUPERCLEAN DD1 does its work.

SYSTEM OVERHAUL:  Use SUPERCLEAN KD150 SYSTEM CLEANER which is a dark brown viscous liquid with a characteristic odour at levels of 2-3%.  It should be used where a machine tool has become heavily contaminated with sticky tramp oils and/or bacterial slimes or mould growths in sumps, pumps and pipe-work, necessitating a more drastic remedy.