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Dear All,<div><br></div><div>We're having a serious problem with our XL-I. The UV filter that is positioned over the condenser lens is fogging with oil every time it is used. It is the underside of the filter that gets fogged. Fogging, of course, completely negates our ability to use the interference optics. A Beckman service rep recently changed the condenser lens and also replaced our vacuum pump. Does anyone have any notion of why this fogging is occurring and what the fix might be? Our service rep is trying hard to get this fixed, but he is new to the analytical centrifuges. Any help the community can offer would be greatly appreciated.</div><div><br></div><div>Chad<br><br><div> <span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>======================================</div><div>Chad A. Brautigam, Ph.D.</div><div>Assistant Professor</div><div>Department of Biochemistry</div><div>The University of Texas</div><div>Southwestern Medical Center at Dallas</div><div>Department of Biochemistry</div><div>5323 Harry Hines Blvd.</div><div>Dallas, TX 75390-8816</div><div>Office: 214-645-6384</div><div>Fax: 214-645-6353</div><div>Email: <a href="mailto:chad.brautigam@utsouthwestern.edu">chad.brautigam@utsouthwestern.edu</a></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span></span> </div><br></div></body></html>