Hi all, We are seeking some information on wet etching of Pyrex and float glass. Specifically, we are seeking a buffered solution and would like to know what kind of HF concentrations can be obtained in such buffered solutions and also what kind of buffers should be used. Any information would be very helpful. Thank you very much and best regards. -- Yit-shun Leung Ki For the microfluidics research group at the IMS _______________________________________________________________ Institute of Microsystems (IMS) Dept. of Microengineering, Batîment BM, Swiss Federal Inst. of Tech. (EPFL), TEL: +41 21 693 7818 CH-1015 Lausanne FAX: +41 21 693 5950 Switzerland URL: dmtwww.epfl.ch/ims