OXYTRANS M is a portable, optical oxygen sensor for measurement of O2 in deaerated water, wort, beer and CO2. Dissolved oxygen has adverse impact on flavour stability and shelf life. •Optical technology; no need for electrolyte and membrane changes •Short response time and excellent long-term stability •Applicable for a wide range of concentrations and temperatures •Highly accurate and virtually maintenance-free •Sturdy aluminum housing (IP 65) Liquid Phase Measuring Range: I) 1 ppb - 2 ppm or II) 30 ppb - 35 ppm Liquid Phase Accuracy: I) ± 1 ppb or II) ± 30 ppb Gas Phase Measuring Range: I) 0 - 4,2 % O2 or II) 0 - 50 % O2 Gas Phase Accuracy: I) ± 0,002 % O2 or II) ± 0,03 % O2