Masterflex L/S Computer-Compatible Digital Drive, 0.1 to 600 rpm, 115/230 VAC. Interface these digital drives to a PC or network for automated lab and process applications--or use as a stand-alone dispensing pumpFlow rate 0.001 to 3400 mL/min with L/S tubing. Flow rate depends on drive rpm and tubing size.Graphical LCD shows four operating modes continuous run, timed dispense, copy dispense, volume dispense. View pump performance continually.Interface with a PC via RS-232 or USB connection Dispense by Volume in mL (0.001 to 99999 mL), L, or gal; Copy¿1 to 9,999 dispense cycles; or Time¿time interval