Agilent Technologies 1100 Series User Manual page 35

• Blocked capillaries will result from the small particles moving downstream.
• Avoid the use of alkaline solutions (pH > 8.5) which can attack the fused
• Partially blocked capillaries may generate flow oscillations when the
1100 Series Nano Pump User Manual
Partly blocked capillaries can be unblocked by removing and reversing the
tube, and pumping on the new inlet. Most blocking will take place at the
high pressure side of the fused silica tubing and not within the tubing.
Reversing the tubing and pumping liquid through the tube before
reconnecting into the flow circuit, will remove the particles and clear the
tube.
silica from the capillaries.
sampler is in mainpass mode and the sample is injected directly onto the
analytical column. These oscillations are not observed when the trapping
mode configuration is used.
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