Polyphosphate salts suspend lime scale in water reducing precipitation on to elements and equipment.
Comes complete with first charge of polyphosphate crystals. Replacement cartridges are available from Cotswold and will normally need to be changed every 6 to 12 months.
These products are a cost effective way of reducing the detrimental effects of lime scale on dairy water heaters and equipment, however in certain cases of permanent water hardness, found in some bore hole supplies, a proprietary salt water softening system may be the only answer