... -60LPM 3-30LPM 2-20LPM 0.5-8LPM 10-60LPM High Quality Portable Hydrogen Gas Flow Meter Gas flow meter for air ... samplers, gas analyzers, pollution monitors, chemical injectors, cabinet purging, etc. Models in stock: 0.5-8LPM,1-12LPM,2-20LPM ,3 ... -30LPM,10-60LPM,etc.Specifications for other models: ModelMeasure RangeScrew threadAccuracyUnit price(USD)ml/min(Liquid)NM3/h ...