This is a brand-name only Request for Quotation for a Mettler Toledo mass comparator to replace an unsupported instrument for the NIST Fluid Metrology Group in Gaithersburg, Maryland. The procurement is set aside for total small businesses and requires delivery within 5 weeks after receipt of order. Questions must be submitted by 11:00 AM ET on April 7, 2026. Award will be made to the responsible bidder with the lowest-priced, technically acceptable quote.