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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 :

In This Section

Pipette looks like zebra crossing

Foam in column

One air bubble about 5 mm under meniscus

One air bubble rising in pipette

Small air bubbles rising in pipette

Random air bubbles in pipette

See Also

Troubleshooting

General error procedure

Flushing liquids

Reagents alarm

Separator error

Fill time-out error

Hazy reports

Leaking pipettes

Liquid level sensor not sensing

Sampling and results troubleshooting

Robot arm error - general procedure

Quality control troubleshooting

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