For Extra Fizz – Perfect for pure soda water, sparkling drinks & cocktails with extra fizz. in seconds—simple to use, easy to clean, and always refreshing. Robust and Reliable - Crafted from high-quality stainless steel components for strength, longevity, and dependable performance. Safety at Its Core - Built-in pressure relief valve to deliver reliable performance and peace of mind. Compatable with the iSi Soda System Chargers. 2 Year Guarantee. Valid when used with an iSi charger. Easy to Clean & Safe — Includes a removable measuring tube for hassle-free cleaning and precise filling, plus secure threading and a pressure-regulating system for added safety. Fizz on Demand: Just fill the siphon with cold water juice or your favourite cocktail, insert a CO₂ cartridge, give it a shake and press the lever to dispense.