Try using a hot DI rinse with a ph of no less than 4 for a final rinse, cut the last h2so4 dip down to 3% and monitor the turnovers in the bath you should be able to get a very nice bright pink surface where you don't need any surface treatment before subsequent processing. Russ ---------- From: Jacob Ransborg To: [log in to unmask] Subject: [TN] Cleaning Process after Electroless copper Date: Thursday, June 18, 1998 1:04AM Hi technetters I would like to hear if anybody have experience wtith a cleaning process of PCB-boards after plating with electroless copper. Does anybody brush the boards or use a chemical treatment etc. Regards Jacob Ransborg ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################