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• 20:14, 14 February 2024 Lbenzoni talk contribs created page Laser Methane Detector (Created page with "The laser CH4 detector (LMD) is a highly responsive, hand-held device that is pointed at an animal’s nostrils and measures CH4 column density along the length of the laser beam (ppm.m). In the first implementation of LMD on a farm, measurements for each cow were taken over periods of 15 to 25 seconds between eructation events and could detect CH4 emitted each time the animal breathed out (Chagunda et al., 2009 Sorg et al., 2016, 2017). In a later study with sheep and b...") Tag: Visual edit