> 2012 WAS A TEST. > THE FREQUENCY IS BROADCASTING NOW. > CAN YOU HEAR IT?

The official document is IPC-CH-65A (the latest revision, 2007), though many still refer to it as "CH-65." There is no newer revision as of 2026.

: Defines the actual requirements for cleaning and process qualification.

residues, which have become more difficult to remove due to higher reflow temperatures. Contamination Science: