Agilent InfinityLab LC Series Diode Array Detectors User Manual 165
9 Maintenance
Clean the Max-Light Cartridge Cell
Clean the Max-Light Cartridge Cell
1 Flush the flow cell with the alcohol for some time.
2 Remove the cell from the cartridge holder (see “Replace the Max-Light
Cartridge Cell” on page 162).
3 Carefully clean the light inlet and outlet of the cell using lens tissue or Q-tips
®
with alcohol.
4 Flush the flow cell with water and repeat the Intensity Test and or Cell Test.
5 If the cleaning with the alcohol did not improve the results, the flow cell might
be cleaned with cleaning fluid (PN 5190-0530). Use a concentration of
0.5 – 2 v/v % (cleaning fluid/water). Use a syringe to fill the flow cell with
cleaning fluid.
The following cleaning protocols are recommended:
• Maximum 3 hours at 25 – 30 °C or
• 30 – 40 min at 30 – 35 °C.
6 Repeat step 4 on page 165.
7 If tests fail again, the flow cell might be replaced if the chromatographic
performace cannot be accepted.
When
Low counts on Intensity Test or Cell Test (failed tests)
Tools required p/n Description
Alcohol (Iso-propanol or Ethanol)
Lens tissue or Q-tips
®
5190-0530 Cell cleaning solvent
NOTE
If Q-tips
®
are used, ensure that no cotton fluff remains at the inlet or outlet.
NOTE
Do not touch the light inlet and outlet of the cell with your fingers. This will add a
layer of contamination on the window and reduce the light throughput.
NOTE
The optimal concentration depends on the water quality, the contamination, the
temperature, and other factors. The use of demineralized water may improve the
cleaning characteristics.
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