Dear MEMS members: I am Yunhe from Magnetic labs of Physics dept, Univ. of Delaware. Now we are considering buying at least 50 piece of silicon wafers for sputtering purpose. Here are some of the specifications: diameter: 100 mm P/boron Orientation <111> test grade thickness: about 500 um polished on one side We are not care much about the other qualities. so the cheaper the better. We need to know the price and how long it will be available. Thanks very much and looking forward to hear from you soon. Yunhe Huang Dept physics; Univ of Delaware Newark; DE 10716 USA