Hello all, I have a question regarding Type II Class II black anodize of extruded aluminum. I have some extruded aluminum heatsinks that look really good (dark black and uniform) coming into receiving inspection, however they become very splotchy and blue colored after they are washed in our MCS100 cleaner with Kyzen. Does anyone have any information they can share with me regarding this issue. Our customer will absolutely not accept any non-uniform black anodize. Richar Carruth Quality Engineer LaBarge Inc. PH# 918-459-2346 [log in to unmask] --------------------------------------------------------------------------------- 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 e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest 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 ---------------------------------------------------------------------------------