... : 0~5000ppm, 2,Resolution: 10ppm3,Application: The carbon dioxide gas sensor uses single-wave non-dispersive infrared (NDIR) ... patented self-calibration technology. It has high sensitivity to carbon dioxide, compact structure, low dependence on humidity, low cost, ... used in biological and chemical experiments.Digital LAB --Carbon dioxide gas sensor (biology lab equipment) Picture Digital LAB -- ...