Hi Technet, I just received an analyses report for our solder bath composition, and my Sn level is at 61.5 percent instead of the nominal 63 percent. This is at the edge of the J-STD-001C specification, so I'll have to add some pure tin to the pot. Last time was many years ago, and unfortunately I forgot the formula for calculating the amount of tin to add. It can't be that difficult, but I thought it would be quicker to ask. Thanks, Daan Terstegge SMT Centre Thales Communications Unclassified mail Personal Website: http://www.smtinfo.net --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------