Last week I asked for comments on our post-HASL cleaning process. As suggested when the forum started operation, I am offering a summary of input I received from several sources. Our process, in brief, consists of two water sprays, dip in a flux remover, dip in a heated flowing water rinse, and a final water spray. Fellow forum participants submitted the following: - our process is fairly standard, may consider eliminating the flowing rinse - conveyorized hot water blaster with Cascade dish detergent and gentle nylon brushes works well - nylon brush in recirculating rinse module with Cascade dish detergent, followed by rinse and dry, produced clean and good-looking boards; water hardness may affect results - mild soap with rinse and dry is one method; more information is on the way - "call me for more information"; haven't been able to get in touch yet. The "Cascade" solution reminds me of something I read in the IEEE SPectrum a year or so ago. Regarding "green" technologies, I believe some people at Sandia or Lawrence Livermore or some such place found the best way to clean PC assemblies was to put them in a dishwasher with a little detergent and a dose of lemon juice. Lou Hart .