To all, I have seen an instance where it will attack White Tin Immersion, there are components in the peelable soldermask such as ammonia that are not very friendly to this particular surface finish. I have not finished collecting all the data concerned so I don't know the amount of time the mask was left on and how well it was cleaned. Just giving everyone the heads up! If there are any of you that have experience with White Tin Immersion and peelable solder mask please let me know. Thanks, Steve Wentz Florida CirTech ############################################################## 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. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################