
40 1100 Series Capillary LC System Manual
2 Optimizing Performance
Static Mixer and Filter
The capillary pump is equipped with a static mixer and an inline filter in front
of the EMPV.
The standard static mixer
The standard static mixer has a volume of typically 420 µl. To reduce the delay
volume of the capillary pump you can remove the mixer.
Conditions to remove the static mixer:
• The delay volume of the capillary pump should be reduced to a minimum
for fastest gradient response.
• The detector is used at medium or low sensitivity.
The standard filter
The standard filter has a volume of typically 100 µl. If the application needs a
reduced volume (e.g. for fast gradient) the 20 µl low volume filter
(01090-68703) is recommended. Be aware that the filter efficiency and
capacity is significantly reduced compared to the standard one.
Removing the mixer will result in an increase of the composition wander and higher
detector noise.
Never run the capillary pump without an inline filter.
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