The granulate is specially developed for Stelton's water filter jug and makes tap water softer, cleaner, and more flavorful by reducing lime, chlorine, and heavy metals. Filtered water also protects kitchen appliances like coffee makers, kettles, and espresso machines from limescale buildup, which extends their lifespan. The granulate is designed to ensure efficient filtration with a fast flow rate, so you always have fresh filtered water on hand. One bag of granulate can filter up to 120 liters of water and should be replaced every 4 weeks to maintain optimal water quality.