Refill Cartridge for Atlas Filtri ScaleArmor POP - Anti-scale Water Filter DESCRIPTION: ScaleArmorPOP is a compact system that is ideal for small domestic households who need a simple solution that provides a hassle free, plug and play installation. The POP Filter works by using a replaceable media solution that prevents the formation of limescale on surfaces, in appliances, and inside pipes. Please note that this doesn't soften the water, but actively inhibits the growth of calcium and magnesium carbonate crystals that would form limescale within your home system. ADVANTAGES: Perfectly suited for homes with boilers, water heaters, washing machines and dishwashers. The anti-scale media prevents limescale accumulation on heat exchangers, heating elements and drainage systems, helping to enhance energy efficiency and reduces maintenance costs.  Proven scale prevention  Continuous effectiveness up to 12 months  Works at higher temperatures  Max 45°C - 113°F | Min 4°C - 39.2°F