The X-LC™ 3185PU solvent delivery unit is designed to operate at pressures approaching 15,000 psi for either gradient or isocratic elution modes. The SSQD (Slow Suction, Quick Delivery) pumping system was designed to provide durable, accurate and pulse-free operation. This simple design utilizes only 2 plungers and 2 check valves for optimum reliability and ease of maintenance. Versatile programming capabilities allow the use of sophisticated time-based programs for isocratic, binary or ternary gradient elutions.

Overlays of several gradient profiles with either step or gradient programs demonstrating excellent reproducibility.