Baseline* Windmill Type Spirometer, Compact, lightweight spirometer for screening large populations, Indicator registers forced vital lung capacity up to 7 liters, Comes with 50 plastic mouth pieces, Dimensions: 3.5 X 3 X 3.5 in, Weight: 2 lbs
VWR* QWS4 Water Still, 120V, Output: 2.4 Liters per hour, Power output of 1.8kW, Easy to install and use, Reliable operation - proven quality components, High quality distillate complies to ASTM and ISO standards, CE Marked, Easy to clean, pH 5.0 - 6.5