30mL, Aeration Oxidation Apparatus replacement Impinger complete unit. Calibrated in 5mL subdivisions. Used to collect samples of pollutants in air. Part of the Aeration Oxidation Apparatus kit (AOF).
Joint: 24/40. The bottom of the bubbler tube is 1mm. It passes 0.09-0.11 CFM of air at a vacuum of 12" H2O. Adaptable to any air sample running steadily at 0.1 CFM.