The Department of Defense, specifically the Department of the Army, has issued a Combined Synopsis/Solicitation notice for a Particle Cleanliness Monitor. This equipment is used for testing and monitoring the cleanliness of particles in a specific environment. The procurement is a one-time purchase of 2 particle counters with water sensors, which will replace 3 existing units at Letterkenny Army Depot in Chambersburg, PA. These units are needed to meet ISO standards and address obsolescence. The monitors will support the Test Equipment Maintenance and production of the AGPU Hydraulic Pump Program. The customer requires 2 units to stagger annual recertifications of the testers.