Nitrate Sensor IAW Salients

The U.S. Geological Survey Kansas Water Science Center seeks one Hach NT3100 Nitrate Sensor with associated annual bench service partnership, with quotes due May 20, 2026 at 11:00 AM EDT and questions due by May 18, 2026 at 11:00 AM EDT. This is a total small business set-aside; the RFQ documents indicate it is designated as a Women-Owned Small Business (WOSB) set-aside at 100%.

Place of performance is the USGS Kansas Water Science Center, 1217 Biltmore Drive, Lawrence, Kansas 66049. Delivery is required within 30 days of purchase order receipt. The NAICS code is 334519 (Other Measuring and Controlling Device Manufacturing) with a 600-employee size standard; PSC is 6630 (Chemical Analysis Instruments).

The sensor specification requires a single-parameter optical UV-based device capable of continuous measurement without reagents, with a 2 mm path length, measuring range of at least 0.05 to 50.0 mg/L, accuracy of 5% of reading or 0.1 mg/L or better, minimum resolution of 0.01 mg/L, and operating temperature range from 2 to 40°C. Housing must be stainless steel with IP68 or better ingress protection, include sludge compensation and a built-in self-cleaning wiper, and weigh no more than 12 lbs including a 10-meter polyurethane cable. The maintenance component includes two preventive maintenance services per year with full repair coverage for parts and labor, unlimited priority technical support, 5-day instrument turnaround time, and 2-day return shipping. Anticipated award date is July 30, 2026. Contractors must be registered at SAM.gov and comply with Buy American provisions, FISMA requirements, Section 508 accessibility standards, and federal labor and trafficking compliance clauses. Responses must be emailed to cynthia_nicanor@ios.doi.gov.