Fizz-Keeper

Fizz-Keeper is a device designed to maintain the carbonation in soft drinks stored in plastic bottles. The invention addresses the common issue of carbonated beverages losing their fizz once the bottle is opened and not consumed entirely. The Fizz-Keeper is a pump mechanism that re-pressurizes the air in soft drink bottles, slowing down the release of carbon dioxide (CO2) from the liquid.

Functionality

The Fizz-Keeper works by manually pumping air into a sealed plastic bottle, increasing the pressure inside the bottle. This increased pressure helps keep the CO2 dissolved in the liquid, preventing the gas from escaping and the drink from going flat. The device typically consists of a cap that fits onto the bottle's opening, with a built-in pump mechanism.

History

The Fizz-Keeper was introduced to the market in the late 20th century as a solution for preserving the carbonation in soft drinks. Its invention is attributed to several inventors, with patents detailing variations of the device aimed at improving its efficiency and usability.

Scientific Basis

The principle behind the Fizz-Keeper's functionality is Henry's Law, which states that the amount of dissolved gas in a liquid is proportional to the pressure of the gas above the liquid. By increasing the air pressure inside the bottle, the Fizz-Keeper helps maintain a higher concentration of CO2 in the beverage, thus preserving its fizziness.

Criticism and Effectiveness

While the Fizz-Keeper has been popular among consumers looking to extend the shelf life of carbonated drinks, its effectiveness has been a subject of debate. Critics argue that simply pumping air, which is mostly nitrogen and oxygen, into the bottle does not significantly prevent the CO2 from escaping. Scientific experiments have shown mixed results regarding the device's ability to maintain carbonation levels over extended periods.

Market Impact

Despite the debate over its effectiveness, the Fizz-Keeper has made a notable impact on the market, with various models and patents filed for improvements on the original design. It remains a popular accessory among consumers who frequently consume carbonated beverages but do not finish them in one sitting.

See Also

• Carbonation
• Soft drink
• Henry's Law
• Plastic bottle

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