... flow rate 3.various flowmeter Portable glass flow meter for air, oxygen, hydrogen 1.high quality gas flowmeter2,measure and ... wide range of OEM and user application in medical equipment, air samplers, gas analyzers, pollution monitors, chemical injectors, cabinet purging, etc ... for other models: ModelMeasure RangeScrew threadAccuracyUnit price(USD)ml/min(Liquid)NM3/h(Gas)NT-4T6-600.2-2l/mindirect±4 ...