Use Triagen from Ecolink, its less toxic than TCE and works pretty well on apiezon wax Hung-I Kuo On Tue, Dec 7, 2010 at 9:07 PM, Om Suwalwrote: > Hi friends, > > I wonder whether some of you have used apiezon (black) wax on Si wafers. I > applied on a silicon surface to protect the surface while wet etching. I am > trying to remove the wax in easy method. I would be glad if someone knows > the easy and clean room friendly method to remove the wax from Si surface. > I > have tried the following methods: > > 1. Boiling acetone / Methanol / IPA - It takes very long time and cannot > remove well. > > 2. Piranha solution - It removes well but produces lot of unpleasant fumes > and contaminates the labwares. It is no problem if wax is little amount. ( > but I applied on a whole 4 inch wafer) > > 3. TCE ( I hate to use TCE). > > Any other methods are acknowledged. > > Thank you > > Om