Where is your Intake for the Air spargers? Is it in the same room as your DES line? ---------- From: John Barber To: [log in to unmask] Subject: [TN] Sparger residue Date: Monday, May 04, 1998 10:21PM We have a problem with a white carbonate type crystaline residue forming around the air sparge holes in the acid copper plating tanks, also in our I.X. plate out cell. They form a small donut and eventualy clog off the air, any idea's?. Thanks John. ################################################################ 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 the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################