MSA's MiniCo® and MiniH2S® responders are compact and lightweight, the MiniCo® responder provides fast, accurate sampling of CO concentrations from 0 to 999 parts per million. Ideal for firefighters, gas utility emergency crews or workers in a steel mill, the MiniCO® responder identifies harardous situations immediately. The MiniH2S® is great in pulp and paper mills, water and waste treatment facilitites, and oil refining or exploration sites, the presence of hyrogen sulfide can be hazardous to safe working conditions. Both available with audible and visible warnings or alarms.