... widely used in gas analyzer, low vacuum control, process control, oxygen supply, anesthesia control apparatus, micro-reactor, capillary measurements, and medical ... -30mL/min, 0-100mL/min, 0-200mL/min, 0-1L/min, 0-5L/min, 0-6L/min, 0-10L/min,0-15L/min, 0-20L/min, 0-100L/min, 0-200L/min ...