The Department of Defense, specifically the Department of the Army, is preparing to solicit bids for onsite calibration services for Hatch Air Particle Counters and associated temperature/humidity sensors at the Rock Island Arsenal, Joint Manufacturing and Technology Center (RIA-JMTC). The procurement involves basic and standard air calibration services for four Met One Model 3415 Particle Counters and OEM bench testing/calibration for four Met One Relative Temperature/Humidity sensors. These services are crucial for maintaining the operational integrity of measurement tools used in defense applications. The solicitation is expected to be issued electronically around October 18, 2024, and interested parties should monitor beta.SAM.gov for updates and amendments. For further inquiries, contact Kevin C. Gilmore at kevin.c.gilmore.civ@army.mil.