Luminex magnetic carboxylated microsphere beads, or equivalent

The FDA's Center for Biologics Evaluation and Research seeks 42 line items of Luminex magnetic carboxylated microsphere beads or equivalent products, with quotes due June 16, 2026 at 3:30 PM Central Time. This is a firm fixed-price commercial product purchase open to all business sizes with no set-aside.

Place of performance and delivery is the FDA/CBER facility in Silver Spring, Maryland, with delivery required within 60 days of contract award. The NAICS code is 325413, In-Vitro Diagnostic Substance Manufacturing, and the PSC is 6640, Laboratory Equipment and Supplies. Quantities range from 1 to 4 units per line item, all in 1 ml volumes.

Beads must feature carboxylated surface chemistry, superparamagnetic or paramagnetic properties suitable for magnetic separation, conjugation capability via amine coupling chemistry (EDC/NHS or equivalent), distinct fluorescent signatures identifiable by flow cytometry, minimum 6-month shelf life from delivery, lot-to-lot consistency, and freedom from microbial contamination and aggregation. The beads are essential components for fluorescent magnetic immunoassays used to evaluate antigen-specific immune responses for RSV, influenza, and other viruses.

Quoters offering equivalent products must clearly identify items by brand name and model number and include a narrative demonstrating how each salient characteristic is met. Authorized resellers must provide a letter of supply on Original Equipment Manufacturer letterhead. Quoters must complete an Accessibility Conformance Report based on Section 508 standards and provide Unique Entity ID and country of origin information for items subject to the Buy American Statute. Prices must be inclusive of shipping and remain firm through September 30, 2026. Quotes are due by email to Contracting Officer Suzanne Martella at suzanne.martella@fda.hhs.gov. Award goes to the lowest priced technically acceptable responsible quoter. Payment is Net 30 days after Government acceptance, with invoices submitted electronically through the Department of Treasury's Invoice Processing Platform.