The system includes:. - Alliance 2695 separation module. - Column compartment. - 2487 UV-Vis or 2996 PDA detector. - PC with data. Specifications:. - Solvent conditioning. - Vacuum degassing, two (2) operating modes, four (4) chambers, < 500 µL internal volume per chamber. - Programmable flow range: 0.000 and 0.010 to 10.000 mL/min, in 0.001 mL/min increments. - Effective system delay volume: < 650 µL, independent of back pressure at 1 mL/min. - Piston seal flushing: integrated, active, programmable. - Gradient Profiles: Eleven (11) gradient curves (including linear, step [2], concave [4] and convex [4]). - Maximum operating pressure: 5000 psi (345 bar) (0.010-3,000 mL/min) Programmable upper and lower limits. - Pressure ripple: