The Pure Filter Granules makes your water softer, cleaner and tastier by reducing limescale, chlorine and heavy metals. Made exclusively for the Aarke Purifier technology, the granules in the bag are poured into the Purifiers refillable water filter cartridge. The granules are sold in a 3-pack of refill bags equivalent to 3 filter cartridge refills. One bag filters up to 120 liters of water and lasts up to 4 weeks. Created in collaboration with BWT, one of the worlds leading water technology companies. * Item excluded from all promotions.