The National Institute of Standards and Technology (NIST) is conducting market research to identify potential sources of commercial products/services that satisfy the Government's anticipated needs for a mass comparator balance. The balance will be used in an environmentally controlled mass lab to train state and industry laboratory metrologists. The minimum requirements for the balance include a maximum capacity range greater than 32 grams, readability less than or equal to 1 microgram, and absolute repeatability less than 2 micrograms. Some key points to consider are: • The balance will be used for training purposes in a controlled environment. • The equipment must meet specific performance requirements, including maximum capacity range, readability, and absolute repeatability. • Respondents are asked to provide information about their company, the equipment they sell, and its technical specifications. • NIST reserves the right to use the information provided for any purpose deemed necessary and legally appropriate.