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44 BD FACSAria II User’s Guide
Fluid Movement
The fluidics system is responsible for moving particles from the sample injection
chamber through the cuvette flow cell for interrogation, and then to waste or into
a collection device during sorting (Figure 2-1). The following sections describe
the controls used to move fluids through the BD FACSAria II fluidics system.
Figure 2-1 Fluidic movement via the fluidics system
Sheath Flow
When you turn on the cytometer, the main air compressor starts up. The fluidics
system is activated when you select the Fluidics Startup command in
BD FACSDiva software. During fluidics startup, sheath fluid is forced from the
pressurized sheath tank through a filter and is delivered to the cuvette flow cell at
SHEATH FLOW
sheath tank
sheath filter
SAMPLE FLOW
sample tube
sample injection
chamber
pinch valve
sample collection
chamber
collection tube
or plate
cuvette flow
cell
interrogation
point
waste aspirator
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