This is a sources sought notice for market research purposes, not a solicitation, to identify sources capable of providing a commercial trace gas analyzer to NIST for the CHIPS R&D Metrology Program. The analyzer must detect impurities such as H2, CO, N2, CO2, and Ar at levels below 1 part-per-billion in pure gases like helium, nitrogen, and argon, and include automated data acquisition, control software, and operations manuals. It will serve as a benchmark to verify NIST-developed cavity ring-down spectroscopy and support certification of gas reference materials. Interested parties should provide company and product details, customization limits, manufacturing location, small business status, pricing, warranty, and references. No solicitation is currently available, and respondents must be registered and active in SAM to be considered for any eventual contract.