Isotope analyses

The U.S. Geological Survey's Geology, Minerals, Energy, & Geophysics Science Center is seeking stable isotope analysis services for approximately 400 foraminifera calcite samples through this sources sought notice. The procurement requires qualified laboratories capable of performing delta-13 carbon (d13C) and delta-18 oxygen (d18O) isotopic analysis on benthic and planktic foraminifera specimens weighing between 0.050 and 0.100 milligrams each. Prospective contractors must demonstrate laboratory capabilities for stable isotope analysis, document their instrumentation and analytical methodologies, provide examples of similar work completed, and describe their quality control practices. Capability statement responses must be submitted via email to Joel Berberena at joel_berberena@ios.doi.gov and should include company information such as business size, UEI, and SAM registration status. The deadline for submitting capability statements is April 6, 2026, and interested parties should note that this sources sought notice is for market research purposes only and does not constitute a formal solicitation.

This pre-solicitation notice includes no set-aside designations and identifies no incumbent contractors or current contract holders. The applicable NAICS code is 541380 (Testing Laboratories) with a small business size standard of $19.0 million in annual revenue, and the relevant Product Service Code is B529 (Special Studies/Analysis-Scientific Data). No award value or budget range has been disclosed in this sources sought notice. The government will provide all foraminifera calcite samples to the selected contractor, who must deliver an electronic report containing measured isotopic values, international calcite standard results, and associated analytical error and precision data by the end of the performance period. Interested laboratories should be prepared to document their relevant experience and analytical capabilities to be considered for potential future solicitation.