Calculating the gold content in a solder pot is a good effort but difficult. A solder supplier or independent lab can test samples periodically. This data is useful to monitor the solder pot as well as refine any empirical model. BV -----Original Message----- From: Nicolas van der Heyden [SMTP:[log in to unmask]] Sent: Monday, June 15, 1998 8:20 AM To: [log in to unmask] Subject: [TN] Gold contamination! I Technetters, I have a question about the Gold-Nickel coating. I want to know if I will have a gold contamination problem in the solder wave? If yes, how I must calculated the number of boards wich pass before I must change the solder? (or time..) Note: I have an automatic solder refiller and I also Know the limit of gold (0.2%, ANSI/J-STD-001A table 5.1) but that's all! Thanks for all for your help ,, ( . . ) ----------o00---O---00o---------------------------------- Nicolas van der Heyden ------------------------------------------------------------ ################################################################ 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 ################################################################