# Dynamic Light Scattering System (Microplastics and Nanoparticles)

Canonical: https://abierto.us/opportunities/hpf2026134655

- Solicitation number: HPF-2026-134655
- Notice type: Sources sought
- Status: Closed. Deadline was July 31, 2026 at 12:00 PM EDT
- Department: Department of Health and Human Services
- Agency: Food and Drug Administration
- Contracting office: FDA Office of Acq Grant SVCS (75F401)
- NAICS: 334516 Analytical Laboratory Instrument Manufacturing
- Place of performance: College Park, Maryland
- First posted: July 27, 2026
- Last posted: July 27, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/5756fc00fc244c859aeeebbb54b4098e/view

## Description

The U.S. Food and Drug Administration (FDA), Human Foods Program, Office of Chemistry and Toxicology, Division of Analytical Chemistry, requires one (1) Dynamic Light Scattering (DLS) instrument system to measure particle size, particle size distribution, zeta potential, electrophoretic mobility, concentration, refractive index, sedimentation, transmittance, molecular weight, and microrheology of dispersed particles and molecules.

The instrument will characterize nano-sized (approximately 1–1000 nm) particles in color and food additives and will support broader analysis of food products that may contain engineered or incidental nanomaterials, including the detection and characterization of microplastics and nanoplastics in food matrices.

## Publications

- July 27, 2026: Sources sought, due July 31, 2026 at 12:00 PM EDT. Notice 5756fc00fc244c859aeeebbb54b4098e. https://sam.gov/workspace/contract/opp/5756fc00fc244c859aeeebbb54b4098e/view

## Points of contact

- David Seid, David.Seid@FDA.HHS.Gov, 301-796-3941

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/hpf2026134655.