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Description
Wash Head Positions
The vertical positions that the wash head can assume are described below.
Each wash head position can be specified by the user to within 0.1 mm.
Note: Procedures for specifying wash head
positions for various plate types are described
on page 30.
Wash Head Position Description
Dispense Height
Positions the aspiration pins slightly
below the top of the well so that fluid can
be dispensed into the well up to a certain
level before it is aspirated.
Well Top
Positions the aspiration pins so they are
aligned with the top of the well.
Aspiration Height
Positions the aspiration pins at the bottom
of the well so that the contents of the well
can be completely aspirated.
Sweep Height
Raises the aspiration pins slightly above
the Aspiration Height (see above) so that
the aspiration pins can be moved back
and forth in the well while the fluid is
being aspirated.
Bottom Wash Height
In protocols with a bottom wash, lowers
the wash head during dispense so that
the force of the dispensed fluid can wash
the bottom of the wells.
4 Opsys MW™ User’s Guide