Measuring and monitoring EX, TOX, and OX hazards; in the automotive industry, for example, development and testing of new engines requires continuous monitoring for the presence of combustibles as well as for oxygen deficiency Other gases subject to monitoring include NH3, toluene, trichloroethylene, and more Fire extinguishing systems using CO2 require special personal protection by means of fixed and portable gas monitoring equipment
GMA, MWG	Carbon monoxide, carbon dioxide, combustible gases and vapors, oxygen
Micro IV	Carbon monoxide, oxygen