Sources Sought COMMERCE, DEPARTMENT OF NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY is seeking Attocube Three Axis Laser Fiber Interferometer for a liquid dispensing electrostatic force balance to disseminate mass less than 1 gram and force less than 10 millinewtons. The purchase is required for the TrueBq IMS project’s final year and is necessary to meet near term project deliverables for uncertainty in liquid mass. The system must be drop-in compatible with existing electrostatic force balance and must have a digital transfer capability using both AquaB and Attocube proprietary HSSL. The system must measure the absolute path length of the laser with a relative accuracy of less than 1 ppm and support 1 picometer position resolution with at least 47-bit digital readout at 10 MHz bandwidth. It must have at least 6 position measurement axis channels and a laser frequency stability of less than 50 ppb over 1 hour. The system must include all necessary optics, hardware, and software to perform three-axis displacement measurement, as well as measurement software to acquire position and vibration data. Interested parties should provide their company details, capabilities, and whether they are an authorized reseller of the product. The response should also identify any aspects of the requirements that could be viewed as unduly restrictive and provide suggestions for encouraging the participation of small businesses. The NAICS code for this procurement is 334516, and interested parties should indicate whether they are a small business or not. The deadline for questions is July 10, 2024.