The National Institute of Standards and Technology (NIST) is seeking sources for a commercially available 500-kip automatic compression testing system with a fully integrated laser extensometer for concrete materials testing. The system must be delivered to the NIST Gaithersburg campus and meet specific technical specifications, including dimensional constraints and ASTM standards compliance. Responses to this sources sought notice are due by July 17, 2026, at 12:00 PM ET. No budget amount is specified in the description. This notice is for market research only and does not constitute a solicitation or commitment to award a contract.