This is a used Thermo Fisher Scientific Accela Pump 60057-60010.
The Thermo Fisher Accela Pump 60057-60010 is a quaternary, low-pressure mixing pump with built-in solvent degassing and pulse dampening systems. The pumping system provides optimum performance in the flow rate ranges needed for liquid chromatography and mass spectrometry. You can run precise gradients from 50 to 1000 Î¼L/min. An extremely low gradient delay volume of 65 Î¼L ensures minimum system cycle times. The integral vacuum degasser offers superb solvent degassing efficiency with less than 500 Î¼L of volume, and the pulse dampener produces stable flow rates without the addition of any gradient delay volume.