This is a solicitation for a firm-fixed price purchase order for specific brand-name items from MP Filtri USA, Inc., including Portable Light Extinction Particle Analyzers and Standard Bottle Sample Units. The requirement is 100% set aside for small businesses. The anticipated award date is on or about January 30, 2026. All items must be new and have clear, documented traceability back to the Original Equipment Manufacturer. Offerors must provide a Certificate of Conformance and necessary traceability documentation.