This project was undertaken at the recommendation of Forintek's Research Program Committee, who were concerned about periodic large claims due to the growth of sapstain and mould on export lumber, thought to be due to the variability in fungicide levels on treated wood. The committee requested an assessment of currently used types of equipment for application of antisapstain chemicals and identification of currently available technologies or procedures which could improve the quality of treatment. A survey of spray technology used to apply chemicals was carried out, focussed towards good application of chemical.