This is a total small business set-aside solicitation for an X-ray diffraction (XRD) system, with delivery required within 20 weeks after receipt of order on a FOB Destination or Delivered Duty Paid basis. The contract will be awarded using a tradeoff best-value method where technical capability is more important than price, and the system must meet all minimum technical specifications. Optional features, such as additional X-ray tubes and powered translation stages, will be evaluated favorably if they enhance system usability or performance. Performance of services will take place at the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland. No specific budget amount is provided in the description.