A few questions on bar solder used in the wave solder process . . . Are all bar solders alike? All claim to exceed the requirements of J-Std-006. Are there any substantial differences between ultra-pure, virgin, etc.? Any advantage/disadvantage between 60/40 & 63/37? Is there in easy method to evaluate the solder performance other than dumping 1000+ pounds of solder and re-filling with the new solder? Or does it just come down to cost (per pound)? ############################################################## TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################