This is a firm fixed-price purchase order contract awarded by the Department of Commerce's National Institute of Standards and Technology (NIST) to Microtrac, Inc. for service and maintenance of BELSORP-VC and BELSORP-BG particle analysis instruments. The potential value of the contract is $106,228.50, with a completion date of September 30, 2022. The contract was not set aside for any specific business category. Microtrac, Inc. is a leading provider of particle characterization instruments, and has received numerous federal contract awards to supply specialized analytical equipment and services to agencies such as the Army, Navy, Air Force, NASA, and USDA. This contract supports NIST's mission in maintaining industrial measurement standards through the provision of ongoing maintenance and support for these particle analysis systems.