Brand Name Only Mass Comparator Mass Comparator Model XPR10003SC

The National Institute of Standards and Technology (NIST) is seeking a brand name only mass comparator, specifically the Mettler Toledo Model XPR10003SC, to replace a 30+ year old instrument that is no longer supported by the manufacturer. The new instrument will be used in the Fluid Metrology Group's (FMG) gas flow standards, which require SI-traceable measurements. The mass comparator must have a 10 kg capacity, 1 mg readability, and meet specific technical specifications. The solicitation is a total small business set-aside, and the award will be made to the responsible quoter whose quotation is the lowest priced, technically acceptable quote. Key requirements include: • 10 kg capacity with 1 mg readability • Repeatability < 2 mg without vibration isolation • Temperature drift < 0.0004 % of reading/°C • Settling time < 5 s • Ability to fit a 1.5 ft x 1.5 ft footprint excluding any manufacturer provided draft shields • Compatible with the Fluid Metrology Group's existing software for data acquisition