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A laboratory study dealing with the adsorption kinetics of ammonia on a flux chamber was performed to determine if adsorption onto the chamber walls was significant. The study took into account the system responses of all instrumentation. The remaining response was considered adsorption. The study detailed how adsorption can be measured in an open system. By knowing an estimate of the adsorption, the concentration obtained from the chamber may be corrected. The study found that the adsorption would not significantly change the concentration of the output flow 30 minutes after a clean chamber was exposed to ammonia concentrations. The adsorption was found to be more significant at lower concentrations. The mass adsorbed for 2.5 ppm of ammonia was found to be 14.7 g.