Major Components of the System
1-6 DSX™ System Service Manual
1.4.3 Pipette Module
The Pipette Module (Figure 1-6) provides the following functions:
Function Purpose
Microplate Handling
Transfers microplate between the ambient drawer,
incubator module, wash module and absorbance module
by gripping the holder, moving it to a new location and
releasing it.
Pipetting
(automatic
liquid level sensor)
Delivers user-selected volume of sample, standard,
reagent or control using disposable pipette tips. Each tip is
automatically discarded into the waste bin after use and
new tip is obtained from a sample or the reagent tip rack
when it is needed.
Tip Ejection
Detection
Verifies that a used tip was ejected before obtaining a new
tip.
Tip Present Detection
Verifies that a tip is on the pipette.
Liquid Level Sensing
Ensures that the proper level of fluid is present.
Electronic Signature
Pipetting
Automatic detection of clots, foam or bubbles when
pipetting samples.
Pipette Module
Microplate
Holder Clamp
and Tip Ejector
Pipette
Figure 1-6 Pipette Module
The pipetting system of the DSX™ Automated ELISA System includes ESP™ (Electronic
Signature Pipetting) software for automatic detection of clots, foam, or bubbles when
pipetting samples. The pipetting signature observed when pipetting each sample is compared
to nominal pipetting signatures of particular sample types (for example, serum or plasma)
obtained during system configuration. If the pipetting signature does not fall within the
normal range of pipetting profiles for that sample type, the system records an error.
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