Waters 515 Pump

The 515 HPLC pump is a programmable, free-standing HPLC pump available in isocratic, gradient, and semi-preparative configurations:   [list]   [*] Precise stepper motor control (48 steps/µL resolution) of dual reciprocating pistons   [*] Non-circular drive gears provide smooth, uniform eluent delivery   [*] User-programmable flow rate calibration and compressibility compensation factors ensure straightforward pump operation qualification   [*] Tests to retention time variations of less than 0.1% for highly reproducible peak performance   [*] Easy-to-read display and keypad for error-free programming   [*] Automatic purging and flow calibration    [/list]