The 218 Solvent Delivery Module is manufactured by Agilent Technologies, with column diameters up to 50mm, and each Agilent 218 Solvent Delivery Module provides maximum flexibility and performance. Whether it is isobaric or gradient operation, or as an injection pump, their flow rate from 0.01 mL/min to 200 mL/min, back pressure up to 8700 psi.