Water Vapour

Water vapour is sampled using a gaseous effluent sampler with a drierite cartridge containing calcium sulphate which absorbs water vapour. Air is drawn through the cartridge by means of a pumping system. The amount of air passing through the cartridge is calculated using the flow-rate and the period of time the sampler has been activated. Measurements of the radioactivity of these samples are carried out at the Radiation Laboratory at King's Park.