Agilent 1260 Infinity II G7111B Quaternary Pump

This is a used Agilent 1260 Infinity II G7111B Quaternary Pump, a core solvent delivery module built for flexible method development and routine analysis on the 1260 Infinity II HPLC platform. The quaternary design allows operators to blend up to four solvents in a single run, which simplifies gradient method scouting and reduces the need for manual solvent changeovers during multi method workflows. The unit has been checked for proper priming, pressure stability, and flow accuracy before being made available for resale. Designed to work within the modular 1260 Infinity II stack, this pump delivers consistent flow across a wide range of conditions and integrates with Agilent OpenLab or ChemStation software environments already common in most analytical labs. Its precision proportioning valve and low pulsation pump heads support both isocratic and gradient elution methods, making it a versatile choice for pharmaceutical, chemical, and academic laboratories running varied sample types on a single system. The pump's diagnostic and self monitoring features also help operators catch seal or check valve wear before it affects data quality. Buying this pump used allows a lab to restore quaternary pumping capability to an existing 1260 Infinity II system or build out a second HPLC line at a fraction of new equipment cost. It is a practical option for labs that need dependable, well tested solvent delivery without the lead time or expense associated with new Agilent hardware.