Government Scientific Source,* Reston, Virginia, has been awarded a maximum $475,000,000 fixed-price with economic-price-adjustment, indefinite-delivery/indefinite-quantity contract for laboratory supplies.  This was a competitive acquisition with four responses received.  This is a five-year contract with no option periods.  Location of performance is Virginia, with a March 20, 2024, performance completion date.  Using customers are Army, Navy, Air Force, Marine Corps and federal civilian agencies.  Type of appropriation is fiscal 2019 through 2024 defense working capital funds.  The contracting activity is the Defense Logistics Agency Troop Support, Philadelphia, Pennsylvania (SPE2DE-19-D-0004).