Hello Technetters, We try to use a Black epoxy to cover the marking of an IC in one of our PCB but the mark is still there after passing through aqueous clean, is there any other solutions to our problem. Would a black paint could do the job? Any comments or suggestions will be highly appreciated. Regards, Edwin Maximo Electronic Assemblies Inc. Philippines email: [log in to unmask] ################################################################ 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################