Hemaki lab-services offers an oxygen meter with ppm level ompm [1 ppm resolution], and % level ompc [0.1% resolution]. This is suitable to detect ppm level of o2 in pure gases, and % level of o2 in purge gas or purify of o2 [100%]. Applications: oxygen plants, gas separation plants, cylinder filling, on-line process control, inert gas purging, enclosed cabins, air-conditioned rooms, human occupancy chambers and many more. Optional accessories: 4 to 20 ma output, single or dual alarm contacts [selectable], maintenance free battery operated with charger, portable cabinet with carrying bag, dedicated economy model available. Features: disposable imported electrochemical cell sensitive to oxygen only; estimated cell life 2 years if used for low oxygen; calibration check by calibration gas/garden air at 20.9% in `cal` mode; power supply - 230v ac or any other as required [battery operated]; response time - 90% within 10 seconds [from low to high]; sample connection - 1/8" compression fittings; range - 0 to 2000 ppm with 1 ppm resolution/0-25%, 0.1% resolution or 0-100%, 0.1% resolution; and digital display led/lcd.