Guenter, I disagree. I think you can clean under BGAs (or any other low standoff device) and clean effectively. It is an issue of surface tension, pressures and flow rates. If you said straight water alone, I would agree. The surface tension of water makes it difficult to get under low standoff parts. If however, you add a suitable surfactant agent, so that your cleaning solvent gets under the parts, then it becomes an issue of how much fluid delivered how fast. There are cleaning agents that will work for low standoff devices, without destroying the materials of construction. Doug Pauls CSL *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************