... formaldehyde, pentanal, hexanal, and α-pinene (i.e., emission factors within ± 10%) at the January and March, 2003 sampling events in which the air change rate varied by approximately a factor ... Conshohocken, PA, ASTM International (ASTM Standard D 5116-97). ASTM. 2003. Standard Test Method for Determining Air Leakage Rate by Fan Pressurization. West Conshohocken, PA, ASTM International (ASTM ... changes in the sources with age and in the house parameters, principally air change rate, temperature and relative humidity. Air change rates in the house, which was operated at a single defined...