Both, taste and shelf life of the product are affected by the amount of CO2 dissolved in the product.
A reliable measuring method is the basis for maintaining a uniform carbon dioxide content in beer, carbonated water and soft drinks. The demand for an accurate and user independent CO2-measurement device led to the development of the automatic Steinfurth CO2 tester CO2MS.
The Steinfurth System offers very quick return of investment combining automatic functioning with integrated sample preparation and easy operation. The instrument can be operated in laboratory or outsourced to the filling line (with the possibility for optional extension to the modular Steinfurth CPA - Compact Package Analyzer).
The CO2MS is the perfect tool for high efficient QC in modern bottling facilities.

Based on the laws of Henry and Dalton, the concentration of CO2 dissolved in a liquid can be determined in a closed package by measuring the pressure and temperature when a state of equilibrium between the gas and the liquid phase exits.
The CO2MS accurately computes the CO2 by using these measurements in conjunction with the particular product CO2-formula. A state of equilibrium is achieved in our process by evenly rotating the bottle in a vertical orientation for a short period of time prior to performing the measurement. The overhead tumbling of the beverage packages provides an optimal equilibrium phase for accurate calculations of the CO2 content.
The Steinfurth CO2MS device combines the perfect sample preparation with accurate measurement.
 
The CO2MS-3V measures pressure and temperature simultaneously, calculates the CO2 content and displays all three parameters. The measurement procedure, including preliminary shaking, head pressure release, procedure “breaks” and measurement is fully automated. The microprocessor controlled measuring head not only calculates and displays the carbon dioxide content, but also writes all the data in form of a measurement test report into the head memory. A total of 649 such measurement results (CO2-value, pressure, temperature, date, time, identification code of the measuring head) are stored.
One input possibility for internal codes (beverage, line, package…) is included.
The measurement data can be transferred from the measuring head via RS 232 interface directly into the evaluation software on the PC or to the printer. 
Extended to CPA (Compact Package Analyzer) and connected with a barcode scanner the system is building a modular QC system for combined CO2, Torque and Fill Level measurement (other modules are in preparation).