The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), is seeking contractors to supply Liquid Helium (LHe) in 100- and 250-liter contractor-owned dewars on an as-needed basis for various cryogenic applications. The procurement aims to ensure a reliable supply of LHe, which is critical for standards development and other agency projects, given its unique properties and limited availability as a non-renewable resource. The contract will be a Firm-Fixed-Price agreement, with a performance period from October 1, 2025, to September 30, 2026, and proposals will be evaluated based on understanding of the Statement of Work, pricing, technical approach, and past performance. Interested parties can contact Shawn Borisow at shawn.borisow@nist.gov or call 303-497-5432 for further details.