This room-sized chamber encloses a volume of 20 m 3 . All interior surfaces are clad with stainless steel. The synthetic materials used in construction of the chamber were selected, in part, for their low emissions of volatile organic compounds. The chamber is equipped with a single-pass ventilation system equipped with filters to remove particles, volatile organic compounds and ozone. Air enters the chamber through a diffuser positioned high at one end of a long wall and exits the chamber through an outlet located low at the opposite end of the same wall.
Air is exhausted outdoors.
Air velocity in the chamber is also monitored in the chamber during experiments. Dual Chamber Facility. The Dual Chamber Facility was constructed of conventional indoor materials to more closely simulate rooms in a building, e.g., with painted wallboard. The facilities have been designed and constructed to permit a variety of modifications necessary to accommodate different experiments. The walls, ceiling and flooring materials can be replaced with other types of materials as needed for experiments and the chambers can be reconfigured.