Gilian® Gilair-5™ RC Pump Compact three-in-one personal sampler 1 to 5000 cc/min. with dynamic 5 LPM range for collection of gases, vapors, and particulates. Features a constant flow control over the entire range of flow. Tri-mode operation range is 750 cc/min. to 5 LPM and pressures up to 38" H2O pressure range. Pulsation-free flow, low-flow upgrade by addition of low-flow module, elapsed time clock includes run/hold function to pause and resume sampling. Flow fault indicator, battery check LED's built-in rotameter, see-thru external filter housing, RFI/EMI shielding housing, 1-year warranty.