| SCH01471 | Dual piston 0 -10ml/min x 0.1ml/min - Waters 501 |
| SCH01461 | Dual piston 0 -10ml/min x 0.1ml/min - Waters 510 |
| SCH01220 | Dual piston incorporates solvent selector valve - Waters 6000A |
| SCH05179 | Dual piston programmable with flow rate to 20ml/min x 0.01ml/min with manual - Waters 590 |
| SCH02278 | Dual piston with microprocessor control 0-5ml/min x 0.1ml/min - ICI LC1100 |
| SCH04630 | Dual piston, microprocessor control with flow to 10 ml/min at max 6000 psi operating pressure - Waters 515 |
| SCH03404 | Gradient low pressure quaternary pump fully programmable multisolvent delivery dual module system with 600 controller with IEEE port - Waters 600E |
| SCH02741 | Gradient pump with injector digital touch pad control - Isco 2350 |
| SCH01571 | Gradient quaternary pump operates with 660 solvent programmer - Waters 600-MS |
| SCH04560 | Non-metallic quaternary system with 600S programmable system controller and includes Rheodyne 9125 injector and switching valve - Waters 626 |
| SCH00923 | Single piston basic pump with pressure gauge 9.9 ml / min x 0.1 ml / min - Waters M45 |