1) Dual piston, positive displacement solvent pumps, with interchangeable solvent delivery pumpheads made of bio-compatible PEEK 2) Pump with maximizer: 1,000 psi (66bar, 6.6 MPa) from 1.0 ~ 80.0 ml/min in 0.02ml/min increments. 3) Pump without maximizer: 1,000 psi (66bar, 6.6MPa) from 0.5 ~ 40.0 ml/min in 0.01ml/min increments. 4) Flow accuracy: 0.5 ~ 40.0 ml/min: 2% 5) Compositional accuracy : +/- 1.0% 6) High pressure dynamic mixing. MX-1 mixer volume without barrel: 263㎕ mixer without mixer barrel extender: 750㎕ mixer with mixer barrel extender: 2.0ml. Maximizer mixer volume without barrel: 750㎕ mixer with mixer barrel extender: 5.75ml; mixer with expansion barrel: 12.75ml 7) Built-in pressure transducer 8) Gradient by software control: 1% increments