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Chapter 4
Flow Core Lateral Stability Test
Provides a statistical characterization of the stability of the core in the direction
lateral to flow. The test computes the centroid position of approximately 3000
SpeedBeads. During the test a histogram of bead centroid position is plotted in the
test window. When the test is complete, the standard deviation of bead centroid
position (in pixels) is printed in the test window.
Contaminated sheath, obstructions, air or improper pump function may broaden the
core which can reduce focus consistency and increase variation in intensity
measurements. This flow core lateral stability ensures the core is operating as
designed with minimal variation. Failure to pass this test is indicative of at least one
of the issues listed above.
The result and the limits for the calibration are shown below the list when the
calibration is selected.
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