Chemvac is a membrane vacuum pump designed to handle most vacuum application Chemvac can be used with gel drying, vacuum concentrators, vacuum ovens distillation. Always ensure to drew in clean air by keeping running the pump for at least 2 minutes after the operation ends to prolong the pumps lifetime. Model: CHEMVAC 400. Power: 220V 50hz, Max Power (W): 90, Max Current (A): 0.6, Max presure: -660 mm Hg, Vaccum 0 mm Mg: 34 I/min, Vaccum 100 mm Mg: 29 I/min, Vaccum 200 mm Mg: 25 I/min, Vaccum 400 mm Mg: 12 I/min, Vaccum 500 mm Mg: 6 I/min, Vaccum 550 mm Mg: 3 I/min, Motor Rotation: 1450 RPM, Capacitance 4 u 400 V, Horse Power: 1/6 HP, Net Wt. 7.0 kg, Port Thread: 5/16", Noise Level: 50 dB