Coravin Argon Gas Capsules / Set of 2. Argon is an inert gas that is heavier than air and creates a layer that sits on top of the wine to keep it from oxidizing. Argon does not react with wine and has no effect on its taste. Each capsule allows you to pour up to 15 glasses of wine (5 oz pours). Coravin's cap creates a seal within the system so that, even months later, no gas will escape.
To replace a capsule in the Coravin system, slide the clamp up to access the black cup containing the capsule, twist the black cup off the unit, remove the empty capsule, and place the replacement in the cup. Twist the cup back onto the unit quickly and tightly, giving an extra half turn for proper seal. Slide the clamp down until it snaps into place, and press the trigger to release a short burst of gas to test the new capsule.
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