
204 BD FACSAria II User’s Guide
Changing the Sample Lines
The primary sample line between the sample injection chamber and the pinch
valve should be changed every 4–6 months or when decreased event rates
indicate that the sample line might be clogged. The secondary sample line
between the pinch valve and the cuvette flow cell needs changing only when it is
kinked or clogged.
Figure 6-9 Primary and secondary sample lines
To wi thstand the high pressures generated by the BD FACSAria II flow cytometer,
the sample lines are attached using a two-piece compression fitting, where a
cone-shaped ferrule is compressed onto the tubing as the connecting nut is
tightened.
To r epla ce the tubing, you will ne ed a 12-inch length o f re placemen t tubing for
the primary sample line, or a 7-inch length for the secondary line. Replacement
tubing is supplied in the accessory kit. The ferrules and connecting nuts can be
reused when the tubing is replaced.
All biological specimens and materials coming into contact with them can
transmit potentially fatal disease. Handle used tubing and fittings as if
capable of transmitting infection. Wear suitable protective clothing and
gloves.
primary
sample line
connecting
nut
secondary
sample line
injection
chamber
flow cell
assembly
connecting
nut
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