A simple apparatus for measuring gas production by methanogenic cultures in serum bottles

Abstract
The construction and use of an apparatus for measuring gas production in methanogenic cultures is described. The device consists of 2 glass syringes and 2 3-way stopcocks assembled and connected to a water manometer. Measurements of known amounts of methane added to serum bottles gave recoveries between 96-101%. [The apparatus may be used to monitor anaerobic digestion.].