Anti-scalant dosing device Minipol / Dosafos model Protects washing machines and dishwashers against lime by preventing scaling. Easy and practical installation. 573100 / WH0146 Anti-scalant dosing device Polyphosphate media dissolves progressively; refill when empty.Refilling must be carried out by an authorised technical service (TAS). Technical: PP loaded cap. VAN cup. Max. pressure: 8 bar. Temperatures from 0 ºC to 30 ºC.