In the beer and beverage industries, the content of dissolved carbon dioxide (CO₂) is a determining factor in the quality and taste of beer and carbonated beverages. Therefore, breweries as well as soft drink manufacturers continuously control and measure the CO₂ quantity during production.

Once the sample is taken equilibrium is automatically created and the operator reads the pressure from the manometer and the temperature from the thermometer. The CO₂ content is then determined by using a Pentair Haffmans’ slide rule.