QPix 450 or QPix 460 Colony Picking System User Guide
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Depending on the failure, after the stacker lane resets, before you continue, you might have to
remove:
Unprocessed plates and lids from the source and destination cassettes.
Broken plates and lids from the source cassette.
If the stacker failure continues, contact Technical Support. Assuming the correct, undamaged,
plate and lid pairs are aligned and used correctly in the correct cassettes, the stacker lane might
need sensor replacements or other adjustments that require a service technician.
Fluorescence Problems and Possible Solutions
No signal is detected in the fluorescence channel
Confirm that the biology sample is fluorescing.
Make sure that the correct filter pair is selected.
Visually check that the light is coming through.
Make sure that sufficient exposure time has been set.
Excessive background fluorescence
Check the integrity of the biological sample. The fluorescence can leach into the agar.
Reduce the exposure time.
Plating Problems and Possible Solutions
Plating processes are available for the QPix 460 System only.
The pipette tips are not being picked up
Check the air pressure.
Contact technical support. See
The pipette tips are not being released
Check the air pressure.
Contact technical support. See
The sample not being aspirated into the pipette tip
Check the aspiration height in the software.
The sample not being dispensed
Contact technical support. See
The sample not spreading well due to an uneven surface
Make sure that the agar is evenly spread over the destination surface.
Adjust the pin heights in the software to compensate for unevenness.
Agar surface is partially damaged
Make sure that the agar is evenly spread over the destination surface.
Adjust the pin heights in the software.
Liquid is splashing when the pipette tip dispenses
The pipette tip is too high above the agar surface.
Liquid is blowing out sideways
The pipette tip is too close to the agar surface.
Summary of Contents for QPix 450
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