In October 2017 – APC has expanded its critical air filter testing capabilities with two new test chambers designed and built to accommodate maximum filter sizes of 72” x 24” x 12” and 48” x 48” x 12”. These new filter test chambers are designed and engineered by APC Filtration and capable of performing filter leak testing and fractional efficiency filter testing to American (IEST), European (EN) and pending ISO filter test standards for HEPA and ULPA filters. ISO 29463-1:2017 test standards are in the final review stages before global filter industry implementation.