This document provides information on air filter testing equipment from FEC. It describes testing systems that can test various types of air filters, including pocket, cassette, and flat sheet filters, according to standards like EN 779. The systems test parameters like flow rate, differential pressure, dust holding capacity, and efficiency. They include components like test ducts, centrifugal blowers, aerosol generators, and particle counters. FEC offers customizable systems for testing filters with capacities up to 6,000 cfm.