Coolant Filtration Coolant which is cleaned from particles improves the life-time of the machine tools and the surface finish of the piece in work. Arboga-Darenth offers solutions for coolant cleaning that cover the most different operation requirements, from flows of 20 liter/min to 10.000 liter/min, and from honing to turning. Arboga-Darenth also provides coolant filter media from coarse to fine grade from stock.