title: Instruments based on polarographic sensors for the detection, recording and warning of atmospheric oxygen deficiency and the presence of pollutants such as carbon monoxide.
mesh_terms: D000388:Air / Q000032:analysis*; D000397:Air Pollution; D002248:Carbon Monoxide / Q000032:analysis*; D008567:Membranes, Artificial; D010100:Oxygen / Q000032:analysis*; D011048:Polarography / Q000295:instrumentation*
chemical_list: D008567:Membranes, Artificial; D002248:Carbon Monoxide; D010100:Oxygen