The U.S. Army Corps of Engineers, ERDC, Environmental Laboratory, Aquatic Ecology and Invasive Species Branch requires brand-name YSI (by Xylem) multiparameter water meters and flow tracker systems compatible with existing Government YSI equipment, under a total small business set-aside for NAICS 334514. The requirement includes two separate systems with separate shipping destinations and optional equipment, delivered FOB Destination to USACE-ERDC-EEW in Vicksburg, MS, and the Center for Aquatic & Invasive Plants in Gainesville, FL. Award will be made on a Lowest Price Technically Acceptable basis, evaluating technical capability to provide the specified brand-name products and an acceptable delivery schedule, plus total price including shipping. Offerors must provide a proposed delivery schedule in calendar days after receipt of order and must not take exception to delivery as soon as possible after award. Payment terms are Net 30, and vendors must be actively registered in SAM with no active exclusions and complete required representations and certifications.