Qiagen QIAsymphony SP, Руководство по эксплуатации

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QIAsymphony SP/AS Consolidated Operating Guide 12/2017 51
Pipettor head
The pipettor head is mounted on the robotic arm and moves in the X, Y, and Z directions in order
to reach different locations on the worktable.
The pipettor head contains 4 pipetting channels with high-precision syringe pumps that are
connected to tip adapters. The tip adapters can be attached to disposable filter-tips. The syringe
pumps can operate simultaneously to allow aspiration and dispensing of small volumes of liquid
(20–1500 µl, application- and liquid-dependent) via the attached disposable filter-tips.
Each pipetting channel can perform two types of liquid-level detection: capacitive-based liquid-
level detection (cLLD) and pressure-based liquid-level detection (pLLD). To detect the liquid level,
changes in capacitance or pressure between the disposable filter-tip and the liquid are measured.
Tip guards
Each pipettor head is equipped with 4 tip guards. During a run, the tip guards are positioned
below the disposable tips to catch any drops of liquid that may fall. This helps to minimize the risk
of cross-contamination.
Tip guards help to prevent cross-contamination.
Optical sensor
During an inventory scan, the optical sensor checks that the consumables are correctly loaded in
the drawers and that there are sufficient consumables loaded for the run.
UV lamp
A UV lamp is mounted on the robotic arm and is used to decontaminate the worktable of the
respective instrument. See Section 14.6 for information about operating the UV lamp.