Refurbished Waters PrepLC 4000 (p/n WAT037101) complete with Prep 4000 Pump (#5 pump heads) (p/n WAT037160), and Prep LC Controller (p/n WAT073660), sample injector (p/n LC 4000),and Prep LC system stand. OPTIONAL: Waters Prep LC universal base (p/n WAT026577), Waters 2996/996/991 Diode Array Detector, Waters fraction collector & Waters Millennium 2.0 PC with bus/lace interface. Please contact us for complete used and refurbished Waters HPLC system, warranty and service contract details. (Waters Delta Prep 4000/Waters DeltaPrep)