FumiSense Pro–Hi is a handheld gas monitor for phosphine concentration measurement when CO is present along with phosphine, like in tobacco fumigation. Equipped with an inbuilt air sampling pump capable of drawing a sample from a distance of 30m and a sensor capable of measuring PH3 up to 2000 ppm, it is the perfect tool for this application. The backlit OLED display enables the user to read the instrument display even in the dark. With user settable datalogging features, the device logs gas concentration values with date, time and location.