<html><head><meta http-equiv=Content-Type content="text/html; charset=iso-8859-15"><META name="Author" content="Novell GroupWise WebAccess"></head><body style='font-family: Tahoma, sans-serif; font-size: 13px; '><DIV>I have a question regarding the wavelength accuracy check for the XL-I:</DIV>
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<DIV>Using a windowless cell (aluminium cell housing only with no centerpiece or windows, or one of the empty holes in the rotor?) - how can I match the weight of this cell with the counterbalance, even at the relatively low speed of 3000 rpm?<BR></DIV>
<DIV>The remainder of the procedure as outlined in the Troubleshooting and Maintenance section of the XL-I manual seems straighforward enough, i'm just a little unclear on exactly how to load the rotor for this measurement.</DIV>
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<DIV>Best Regards</DIV>
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<DIV>Mark</DIV>
<DIV> </DIV><br/><div style='clear: both;'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>Dr Mark Agacan, Scientific Officer for the Division of Biological Chemistry and Drug Discovery,<br>Wellcome Trust Biocentre, College of Life Sciences, University of Dundee, Dundee, DD1 5EH <br>Tel: +44 1382 386095 Fax: +44 1382 345764 Mobile: 07525 451 117<br>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div><br/><BR>
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