The U.S. Food and Drug Administration requires one Dynamic Light Scattering instrument system to measure particle size distribution, zeta potential, concentration, and other properties of dispersed particles and molecules. The instrument will characterize nano-sized particles (approximately 1–1000 nm) in color and food additives. It will also support broader analysis of food products containing engineered or incidental nanomaterials, including microplastics and nanoplastics. No timelines, budget amounts, or performance location were specified in the description.