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ACCQPrep HP125
Section 5 PeakTrak
5.2.8 Column Data
5.2.9 Files
5-18
to 90 °C, but is limited to a range of 5 °C below and 60
°C above the ambient temperature. The drift tube
temperature must be high enough to evaporate the
solvent aerosol entering the drift tube. If the temper-
ature is not high enough, unevaporated solvent may
form a fog that condenses on the detection system
preventing detection of the compounds. This can be
corrected by using the ELSD O
M
C
ANUAL
ONTROL
through the drift tube without liquid. Temperatures
that are too high can cause semivolatile compounds
to vaporize and become undetectable.
• Purity Measure — If using two absorbance wavelengths,
check "Show Ratio" to display a ratio of the selected
wavelengths. The ratio trace is often a useful indicator
of purity. Use the S
measure purity by using a comparison of the entire
· UV-spectra measured at differing times as a purity
measurement. The S
button allows fractionation based on spectral purity.
The Column Data window reports information about the RediSep
ACCQPrep column installed in the system. This information
includes. The "Number of times used," "First used on," and "Last
used on" information can help you determine when the column
should be replaced. The "Last fluid used" will help you determine
if any solvent remaining in the column will be miscible with the
solvent currently used in the system. To view the Column Data
window, open the M
ETHOD
C
D
button.
OLUMN
ATA
The Files window is modal. That is, its function and features
change according to the command used to open the window.
Menu commands such as F
clicking O
and S
PEN
AVE
this window to browse the system's files and folders. The fol-
lowing controls appear on the window:
• Current Path — The top-left corner of the window
displays the path (current folder). As you browse
through the files, the path will update as you go. You can
click the folder names to return to upper folder levels.
• File and Folder Operation buttons:
· C
— Click this button to copy a highlighted file to
OPY
the system's clipboard memory.
· P
— Click this button to paste a file from the
ASTE
clipboard memory. If the file already exists in the
current folder, the system will ignore the Paste
command to prevent the original file from being
overwritten.
· D
— Click this button to delete a highlighted
ELETE
file or a folder and its contents.
button in the
N
window to turn on the flow of gas
S
P
HOW
PECTRAL
URITY
P
D
PECTRAL
URITY
E
window, then click the
DITOR
> O
and S
ILE
PEN
AVE
A
buttons will open this window. Use
S
control to
ETECTION
M
A
, or
ETHOD
S
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Table of Contents
Troubleshooting
