The new Geotech Biogas 5000 portable biogas analyser has mobile phone-style intuitive menus, tactile buttons and a full-colour, daylight-readable screen. About 25% smaller and lighter than the Biogas Check which it supersedes, it has a 3-year warranty. It measures methane (CH4) and carbon dioxide (CO2) with greater accuracy (both to ± 0.5%) and oxygen (O2). It optionally measures hydrogen sulphide (H2S) at low- or high-ranges to 10,000ppm. Holding 500 readings against 10 sample points, analysis response is halved to 10 seconds, saving time and increasing productivity.