With the ability to detect solely for phosphine, the PH-90 is a personal monitor for those in the fumigation industry. This compact unit has the ability to operate for up to 300 hours using the rechargeable Li-Ion battery pack. The impact resistant rubber boot and ATEX international certification ensures this unit is built to last. With the protection of audible, visual and vibrating alarms this device will alert the user of the slightest leak (0 – 20ppm). The PH-90 is an ideal replacement to detection tubes which may have been used in the past.