b.
To remove any remaining beads
and liquid from the keyholes,
grasp the strip at one end with the
strip seal facing up, then swing
the strip with a rapid, downward
centrifugal arm motion, ending
with a sharp wrist-flick.
c.
Grasp the strip at the other end,
then repeat the centrifugal
motion.
d.
Check tube positions for
significant amounts of beads that
are still trapped in keyholes (see
the following figure), then repeat
the centrifugal motion, if needed.
It is acceptable if a few beads
remain in the keyhole or on the
tube wall, but most should be either in suspension or in a pellet at the
bottom of the tube.
1
2
Example Genexus
™
Strip 3
‑
GX5
™
before (upper) and after (lower) inversion. The
carrier has been removed to show tube contents more easily.
1
Magnetic beads trapped in keyholes
2
Magnetic beads dislodged from
keyholes
Chapter 7
Load the sequencer and start a run
Before you begin
7
Genexus
™
Integrated Sequencer User Guide
73