want to borrow proTEK (protective coating)

Qiushi (Helen) Ran qran at stanford.edu
Tue Nov 15 18:15:44 PST 2011

Sorry to spam. I am doing a KOH etch from the backside of the wafer. But my front side of wafer has Al, which can't survive in a long time KOH etch. I am wondering if  anyone have proTEK (http://www.brewerscience.com/products/protective-coatings) or have used the proTEK before to protect the frontside of the wafer? Any comments and suggestions are welcomed.

Qiushi(Helen) Ran
Department of Electrical Engineering
Stanford University, Stanford, CA 94305.
Mobile: +1-650-796-1439
Email: qran at stanford.edu 

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