Remove limescale build up from your dishwasher with Opal dishwasher salt granules. Adding dishwasher salt regularly will help to soften the water and protect against long-term limescale build-up. These salt granules are of the highest purity and do not actually go into the wash chamber but remove calcium deposits in the base of your dishwasher. They periodically backwash the water softener unit in the base and regenerate it by using a clever ion exchange process instead. Features and Benefits Cares for your machine - You can keep your dishwasher running for longer and at optimum performance. Lime scale protection - Keep those calcium deposits down and your dishwasher free from lime scale. Specially granulated - This works to eliminate the damaging effects caused by hard water by softening it. Specifications Made in the UK Weight: 2kg Dimensions: H17 X W17.5 X D8.7cm