Use beer to calibrate your CO2 analyser: celebrate!

AbstractBottled beer is used to calibrate a CO2 analyser by measuring the dilution of O2 when gas collected in the headspace of the bottle is diluted with atmospheric air. The method is simple and provides an accurate calibration of a CO2 analyser in the field without the need or hassle of transporting expensive calibration gas.
Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology - Category: Physiology Source Type: research