SKC 225-370 Sioutas Cascade Impactor - Manual (Page 5)

5
Note: Tighten thumb nuts
using an alternating patt ern.
It is important to the operation
of the impactor to tighten the
thumb nuts completely.
One, Two, or Three-stage Sampling
Place desired number of loaded stages (accelerator and collector plate pairs) onto the
outlet plate. Replace the inlet plate, replace and tighten the thumb nuts, calibrate,
and sample.
3 4
Nest a collector plate in top of outlet
plate. Align the marks.
Use forceps to place a 25-mm fi lter in
collector plate.
Filter
Align
marks
5 6 Filter
Filter
retainer
7
Repeat Steps 3 through 6 for stages C-A,
slide inlet plate into place, and screw on
thumb nuts.
Align
“D” with
mark
Use forceps to place a fi lter retainer on
top of the fi lter. Press down fi rmly
until snug.
Place accelerator plate D (O-ring
side up) on top of collector plate.
Align “D” with mark.