How It Works

The Genii will preserve your Champagne or sparkling wine for weeks. It’s as if the bottle had never been opened.

See How It Works: Watch Our Video

As soon as a bottle of Champagne or sparkling wine is opened oxidisation occurs. This causes the wine to lose its fizz. Once opened, a bottle of sparkling wine has to be served almost immediately to retain its quality.

The Genii wine preserver stops this oxidisation from occurring, naturally and safely by adding CO2 gas back into the bottle. It’s as if the bottle had never been opened.

Why Genii?

For bars and restaurants serving expensive Champagne or sparkling wine by the glass there is the obvious issue of wastage when a wine loses its fizz – nobody wants to drink flat sparkling wine.

Using Genii to preserve sparkling wine puts an end to this wastage. Until now the best Champagnes and sparkling wines could only be served by the bottle. Now, with Genii all sparkling wines from the menu can be served by the glass. This provides wine lovers with a greater choice than ever.

Technical Information

Genii is a two-part system that will seal and preserve an opened bottle of Champagne.

The closure is placed on the bottle to reseal it. Once the closure has been locked onto the bottle, the carbonator is introduced into the closure and twisted. This operation injects pressurised gas into the bottle.

The system is far more ingenious than a simple pressurising device. Using valve technology similar to that which protects a divers air supply, the initial injection of gas forces the air in the headspace out through a vent. Once a given compression is reached, the vent closes. The release of gas continues until a discrete pressure is achieved and then automatically shuts off. The pressure introduced ensures none of the precious bubbles can escape and the gas stops oxidation of the Champagne and sparkling wine. The contents are now perfectly preserved.


Q: How will I know when the bottle has been charged?

A: The valve in the Cap shuts off automatically when a pre-set pressure of 50 psi is reached inside the bottle.

Q: How will I know when the gas cartridge is empty?

A: You will not hear the flow of gas when attempting to charge.

You can also engage the Charger onto a Cap that is not on a bottle and easily determine if there is gas remaining.

If you depress the Needle in the Charger Nozzle when the cartridge is empty, the Needle remains in the down position.

Q:  What pressure is reached in the bottle after it has been “charged”?

A: 50 psi.

Q: What materials are used?

A: A combination of robust glass-filled plastic and 403 or 404 grade Stainless Steel.

Q: I can’t fit the Cap onto the bottle, why?

A: It is likely that the Cap is in the locked position and the Clamp Ring must be unwound. You will feel that the 3 locking claws on the underside of the Cap can move freely when the Cap is unlocked.

The Cap has been designed to fit on a wide variety of bottles. If you cannot fit the Cap onto your bottle squarely, please email us at with a photograph if possible and a description of the bottle.

Q:  Does the system still work if there is only a small amount of liquid left in the bottle?

A:  Yes. You will note that it takes longer to fill the larger head space in the bottle when only a small amount of liquid remains.

Q:  What happens if I unscrew the Charger and there is still gas left in the cartridge?

A:  You will hear the gas escape through a vent hole in the base of the Charger. Simply re-tighten the Charger to stop the flow of gas.

Q:  How should I store the bottle with the Cap on?

A:  The bottle should be stored vertically at serving temperature ideally. Our testing has been conducted at 5 degrees Centigrade.

Q:  What pressure is the gas under in the Cartridge?

A:  800 psi. Our patented valve system steps down the gas pressure to approximately 150 psi in the Charger assembly and by 1/3 in the Cap assembly, resulting in 50 psi of pressure, once the bottle has been charged.

Q:  Will the Cap fly off as a cork can?

A:  No. The Cap is designed to be retained during the gas pressure release phase of opening.

The Clamp-Ring should be released slowly, allowing the gas to vent normally.

Q:  Can I over-tighten the Cap?

A:  No. A ‘stop’ detail has been included to obtain optimum pressure against the bottle seal.

Finger pressure to the Clamp Ring is all that is required for a good seal.

If you have any other questions, please email us at