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<DIV><FONT size=2 face=Arial>Hi RASMB,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>1) </FONT><FONT size=2 face=Arial>I'm working with
an XLI spinning an 8hole rotor fully loaded with 8 cells running the
instrument at 40krpm. It takes the instrument 20 scans to reach top
speed. This was determined by taking omega from omega-squared t,
which I took from the second line of the header of each absorbance scan
file. I'm not sure if this is the normal behavior of this instrument and
it seems to me a fairly long period of time to wait for the instrument to come
to speed. </FONT><FONT size=2 face=Arial>As I see a number of posts which
note that software such as UltraScan correct data collected during the early
part of a scan for acceleration effects, perhaps this is entirely normal
behavior and not worth worrying about?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>2) If one performs a wavelength scan with the
instrument in absorbance mode, using a step size of 1nm increments, should one
expect to observe in the data file absorbance data at 1nm increments? If
one observes wavelength steps that vary +/- 4nm, could this be a
problem?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Thank you in advance for any comments you may wish
to share, they are much appreciated.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>John Sumida</FONT></DIV></BODY></HTML>