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This Waters 2545 Module Binary Gradient Module High Pressure Pump unit powers on and has some slight visual cosmetic wear from normal use, please see photos for details.The Waters 2545 Binary Gradient Module (BGM) is a high-pressure mixing binary gradient pump. This unit is the primary solvent delivery device for the Waters AutoPurification System that enables subsequent isolation & purification of targeted compounds. To allow for rapid solvent changeovers and system purges this module integrates solvent selection valves on each solvent delivery channel.Specifications- Flow rate range: 0.50 to 150.00 mL/min- Flow rate increment: 0.01 mL/min- Delay volume: 350 L maximum- Flow accuracy: 1.0% of required flow or 10 L/min, whichever is greater (MeOH or water at 600 psi)- Operating temperature: 4 to 40 C- Operating humidity: 20 to 80%, non-condensingAdditional Prep Fees May Apply