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. Non refillable, recyclable steel. Keep cool and dry. Do not use for any other purposes. Do not inhale. Misuse can be physically harmful and dangerous. Store at room temperature and keep dry, away from sunlight and temperatures above 122 degrees F.