Bring the delicious taste of filtered, chilled and sparkling water to your home today and enjoy maximum comfort with water directly from your kitchen faucet. The Grohe Blue starter set includes a 2 kg CO2 bottle to enrich drinking water of the highest purity from your Grohe Blue faucet. You'll never run out of refreshing water again, as each 2 kg bottle is enough for up to 350 liters of sparkling water. You can be sure that every drop from your faucet will have a clean, pleasant taste. Unlike other models on the market, Grohe uses only CO2 from natural sources deep within the earth, which has a purity of at least 99.9% by volume, guaranteeing a natural taste of well-being. It brings the acid balance in the body into a healthy equilibrium. This bottle features a convenient carrying handle for safe and hassle-free transportation, as well as an integrated device shut-off valve that maintains a certain residual pressure inside the bottle after emptying to prevent backflow. Installation is done in just one minute. Unscrew the spent bottle and screw the new one back on. It couldn't be easier or safer. Once you've used up the bottle's contents, you can order the Grohe Blue 2 kg CO2 bottle for refilling (40424000).