American Society for Testing and Materials (ASTM). Current edition approved May 15, 2005. Published July 2005. Originally approved in 1993. Last previous edition approved in 2001 as D 5286 – 01. 5 p. These test methods cover the determination of the transfer efficiency of spray-applied coatings under general plant conditions. Transfer efficiency is the ratio of paint solids deposited to the total paint solids used during the application process, expressed as a percent.