The National Institute of Standards and Technology (NIST) is seeking sources for a Two-Dimensional Liquid Chromatography (LC) instrument with two years of maintenance, including specific pumps, sampler, column compartment, detector, fraction collector, and software. This is a combined sources sought notice and notice of intent to award a sole source contract, but NIST may pursue a competitive acquisition if other capable sources are identified. No budget amount is specified in the description. The location for performance of services is not mentioned. Responses to this notice are due by 9:00 AM EST on July 23, 2026.