This is a Request for Information (RFI)/Sources Sought only for information and planning; no solicitation package is available, and it does not constitute an IFB, RFP, or RFQ or commit the Government to contract. The Navy seeks information on currently available products for (QTY 38) Hydraulic Fluid Particle Counters, P/N 4348AS1000-1; (QTY 12) Phosphate Ester Particle Counter Assemblies, P/N 4348AS2000-1; and (QTY 4) NOAP Lab Particle Counters, P/N 4348AS3000-1. These Common Support Equipment items support attached Foreign Military Sales programs and extended deployment of listed platforms, supporting Hydraulic Contamination Control Program and Aviation Hydraulic Manual requirements to verify hydraulic fluid cleanliness in aircraft and support equipment. The particle counters detect and classify particulate contamination and determine pass/fail of hydraulic fluid. Interested parties should provide company information and descriptive literature on products meeting the Navy's requirements, including point of contact, phone, email, website, DUNS, CAGE Code, and business size status for the relevant NAICS code.