Particulate Matter Monitors

This document provides official answers to vendor questions regarding Request for Quote (RFQ) 123A9426Q0049, issued by the USDA Agricultural Research Service. Key clarifications and requirements include: * **Bill of Materials & Quantity:** The authoritative bill of materials consists of part numbers 8533EP, 8535, 801807, 801850, and B2B5-8533EP with quantities of four each (CLINs 0001–0005), and a single shared accessory kit (801830) under CLIN 0006. * **Descriptive Literature:** Standard manufacturer datasheets and catalog pages referencing each salient characteristic are sufficient; a separate compliance matrix is not required. * **Warranty & Supplier Terms:** The five-year warranty (CLIN 0005) is subject to AGAR 452.203-72 and the no-automatic-renewal provision. Any manufacturer-specific terms require a signed USDA Supplier Terms Authorization Form to be binding. * **Buy American Act:** Because the estimated contract value is under $100,000, FAR clause 52.225-1 applies, while Trade Agreements (52.225-3) do not. * **Delivery:** Curbside FOB Destination delivery to Mississippi State, MS is acceptable, with receiving personnel handling the shipment upon arrival. * **Authorization:** Vendors must submit a manufacturer authorization letter or equivalent proof of status as an Original Equipment Manufacturer (OEM) or authorized reseller.

The U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS) has issued a Request for Quotation (RFQ), solicitation number 123A9426Q0049, to procure four particulate monitors and required accessories. The equipment will be utilized by the Geospatial and Environment Epidemiology Unit (GEERU) to measure real-time concentrations of airborne particles in commercial poultry facilities, generating environmental input data for aerial disease transmission model development. This is an unrestricted, commercial item acquisition under NAICS code 334516 (Analytical Laboratory Instrument Manufacturing). The basis of award is Lowest Price Technically Acceptable (LPTA). Quotes may be submitted for the brand name TSI Incorporated DustTrak DRX Model 8533 and associated components or technically equivalent "or equal" items that meet all specified salient characteristics. Key technical requirements for the monitors include: - Capability to measure PM1, PM2.5, respirable, PM10, and total PM size fractions. - Aerosol concentration range of 0.001 to 150 mg/m³ and particle size range of 0.1 to 15 µm. - Rechargeable battery system, external pump, heated inlet with auto-zero functionality, and a weatherproof, tripod-mountable enclosure with a 360° omnidirectional sampling inlet. - A five-year warranty contract and compatibility with USB data transfer. Deliveries are required within 30 days after receipt of order (ARO) to the USDA-ARS facility in Mississippi State, Mississippi. Questions must be submitted via email by September 14, 2026, and final quotes are due by September 18, 2026, at 12:00 PM Eastern Time.