A solicitation is issued for a calcium thiosulphate metering pump system and installation for the USGS Western Fisheries Research Center in Seattle, WA, with delivery FOB destination. This is a small business set-aside for commercial items under NAICS 333914, with a preference for articles manufactured in the United States. Quotes must include a firm-fixed price, technical specifications, and a SAM UEI, with evaluation based on comparative assessments. The estimated period of performance runs from August 15 to November 15, 2026. No budget amount is specified in the notice.