Profile: Mc Neill International Inc. manufactures a range of gas detection equipment. Our product line includes sensors, calibration gas, transmitters, controllers, alarms, data loggers, sample draw monitors and single gas portable monitors. We supply confined space monitors, oxygen sensors, LEL sensors and toxic sensors. We specialize in gas solutions specifically used for environmental and industrial hygiene applications. We have both reactive and non-reactive gases. Our non-reactive gases include benzene, helium, hydrogen, nitrogen, hexane, carbon dioxide and carbon monoxide. Our electrochemical toxic gas sensors are maintenance free, having no chemicals to add or check. We also offer 4-20mA boards, mV boards, aspiration fixings, mounting noses and mounting collars.