Portable Biogas Analyzer 5000 With H2S is used for The Accurate Gas Monitoring. BIOGAS 5000 Methane Detectors have A Robust, High Quality Design which can be Fitted easily And are extremely Easy To Use In Laboratory, Farms, Food Processing Plants And, Wastewater Treatment Facilities. Portable methane gas detector measures CH4 0-100%, CO2 0-100%, And O2 % 0-25% By Volume, Static, Differential And Barometric Pressures Measures H2S (Hydrogen Sulfide) (Optional) NH3 (Ammonia) (Optional) Reads Gas Temperature With Optional Temperature Probe for more details: https://diamondsci.com/gem5000-methane-detectors