[BNC-all] Chemical Source Change

BNC is switching chemical suppliers for stock acids . In February, our acid supplier ICR had an equipment malfunction and shipped a batch of BOE that was 10x too dilute. . All faulty material has been pulled and was replaced with tested BOE lots dated 03/19/08 and 03/28/08 . Demands from BNC for more rigorous quality controls and documentation were unmet. . BNC is phasing out ALL ICR materials and switching to J.T. Baker for all acid supplies (HF, BOE, H2SO4, HCl, HNO3). The cross over will occur as each acid stock is consumed. John R. Weaver Facility Manager Birck Nanotechnology Center Purdue University (765) 494-5494 jrweaver@purdue.edu