MAX Bev-CO₂ is a fully automated ten-channel system dedicated to monitoring the purity of carbon dioxide (CO₂). The system is a fully integrated total analytical solution capable of measuring trace impurities in gaseous carbon dioxide (CO₂) with a detection limit in ppb units and thus declaring the absolute purity of the given gas, in parallel at ten different points in the given process. This system is based on a MAX-iR FT-IR spectrometer equipped with a DTGS detector and with a spectral range of 600–5000 cm^-¹. In this range, all relevant impurities in carbon dioxide except oxygen can be detected (oxygen is handled by an optional analyzer integrated into the optional rack).

Direct online measurement of CO₂ purity using MAX Bev-CO₂ eliminates standard methods such as Zahm-Nagel purity testing. Using incredibly precise pressure and temperature control, the MAX-Bev CO₂ purity monitoring system is able to measure CO₂ concentration to 100 ± 0.02 % simultaneously with trace impurities including sulfur-based compounds. As part of the CO₂ purity monitoring system, the MAX-Bev is equipped with an oxidizer that converts all sulfur compounds into sulfur dioxide (SO₂), which is then measured on-line with an FTIR spectrum using the MAX-iR.

The entire MAX-Bev CO₂ gas purity monitoring system is controlled by MAX-Acquisition software, which allows you to manage all aspects of data acquisition and overall analysis, displaying system diagnostics, alarms and generating/printing certificates of analysis as well as archiving all data.

The table above shows how the MAX-Bev CO₂ monitoring system meets or even exceeds the requirements of the International Society of Beverage Technologists (ISBT) Standards for measuring key impurities in CO₂.