11.9 - Leaking pipettes
1. Check for particles like specks of dirt or hairs in the pipette
valve.
2. If no particles are found, replace the valve tube and valve body.
11.10 - Liquid level sensor not sensing
1. Liquid in the container is not detected. This occurs sometimes with the
De-ionized water
bottle and is
caused by a very low conductivity.
2. Add one or two drops of
Saline
to the
De-ionized water
to increase the conductivity.
11.11 - Air bubbles
After a normal aspiration, the Westergren pipette must be free of air bubbles. In the following examples
different patterns of air bubbles which can appear in the pipettes are shown. Air bubbles can affect the
sedimentation and are mostly reported as errors and no ESR result is reported.
Usually bubbles are caused by a leakage at the bottom of the pipette. If air bubbles are visible in the pipette,
check the following :
Troubleshooting
MRN-164_2-EN Version 2.02 Interrliner
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