The iSi Professional Cream Chargers are designed for use in a cream whipper to whip cream, desserts, espumas, sauces, soups and rapid infusions. Always use iSi chargers in combination with iSi cream whippers and only in accordance with instructions. Each professional cream charger contains 8.4 g of pure Nitrous Oxide, for use with iSi professional and home whippers. Made of recycled steel, this charger features metallic purple color.