Evaluation of aerosols counter method for efficiency of air filter

Based on the characteristics analysis of the particles counter method and the aerosols counter method, points out the necessity of replacing the former by the latter. Presents that the dust source characteristics and aerosols generator are the core parts in the aerosols counter method, and compares the dust source and the aerosols generator regulated in the standards of ANSI/ASHRAE 52.2-1999 and EN 779:2002. Expounds the reason for adopting the aerosols counter method in the standard of GB/T 14295—2008 of China, and summarizes the advantages of the method based on the implementation of the standard.