Qiagen EZ2 Connect MDx User Manual page 36

The pipettor head contains 24 high-precision syringe pumps that are connected to tip adapters
which can be attached to filter-tips. The syringe pumps operate simultaneously and can aspirate or
dispense small volumes of liquid (50–1000 μl) through the attached filter-tips.
Another component of the pipettor head is the piercing unit that is located behind the tip adapters.
The piercing unit is a row of 24 metal spikes that puncture the foil sealing the reagent cartridges.
During operation, the piercing unit opens all wells of the reagent cartridges in a dedicated order.
The pipettor head then automatically picks up filter-tips from the tip rack and performs aspiration
and dispensation operations at different locations on the worktable before ejecting the tips back
into the tip holder held on the tip rack at the end of the run.
Figure 9. EZ2 pipettor head.
EZ2 Connect MDx User Manual 05/2022 36