HPLC pumps

The 515 HPLC pump is a programmable, free-standing HPLC pump available in isocratic, gradient, and s (more)emi-preparative configurations: 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