Liquid degassing using mono-dispersed and poly-dispersed micron droplets (148.6 and 264.8 mu m) falling in an inert gas was studied experimentally and analytically in a laboratory setting. The system using poly-dispersed droplets revealed an upper degassing limit of 93% when the inert gas to liquid flow ratio was above 15 and a fog-type nozzle was used. Linear correlations of the Sherwood number to the Peclet number were derived for both systems of medium Reynolds numbers (10100). The correlation for the mono-dispersed droplets agreed well with the steady state mass transfer correlations that are available in literature, especially at small Peclet number situations. (c) 2012 Canadian Society for Chemical Engineering