The Grohe Blue Magnesium + Zinc filter starter set is the sustainable way to delicious mineral water straight from the tap. Premium-tasting hydration is yours at just a turn of the tap with the Grohe Blue Magnesium + Zinc filter starter set, which enriches the water with up to 35 mg/l of magnesium and up to 3 mg/l of zinc. The smart filter technology removes unwanted materials and impurities responsible for unpleasant taste and odor, such as chlorine, and reduces heavy metals. It also minimizes lime to protect your household devices and enhance the taste of the water. The process transforms source water into pure premium drinking water with a clean, fresh, and enhanced taste and added minerals for your well-being and vitality. The filter has a capacity of 400 liters (at 17° dGH). A flow meter with a digital display powered by two AA batteries monitors the lifetime of the filter and lets you know when it needs to be replaced. Simply unscrew the used cartridge and screw in the replacement. The filter set is compact and designed to occupy a minimum of space in the under-sink cabinet. It’s compatible with all Grohe Blue Pure single faucets.