Page 3
007-04-001 Issue F September 2018
Figure 3
cassette. Fit the retaining ring over the sampler top and screw down firmly to secure
the cassette within the sampler and seal the cassette inlet and outlet.
Ensure that the grit pot is securely fitted over the ridge around the bottom of the
sampler body.
Flow Calibration
Connect the inlet hosetail of the sample pump to the air outlet of the cyclone sampler
with a length of flexible tubing. Connect the flow calibration device (such as a chek-
mate flowmeter or rotameter) to the air inlet of the cyclone sampler using a second
length of flexible tubing.
Calibrate the sample flow rate to 3.0 l/min.
Disconnect the tubing from the cyclone sampler inlet and outlet. Remove the cassette
from the cyclone sampler.
Hold the cassette upside down and prise the two halves apart using the side tab.
Remove and discard the calibration filter. Place the pre-weighed filter to be used for
the sample, onto the filter support grid and re-assemble the cassette. Fit the cassette
into the cyclone sampler.
Quickly re-check the flow rate and make any final adjustments. Switch the sample
pump off.
The cyclone sampler is now ready for sampling.
After Sampling
Away from the sample location quickly check the sample flow rate, then disconnect
the tubing from the cyclone sampler air inlet and outlet.
Carefully remove the cassette from the cyclone sampler and split the two parts of the
cassette apart.
Post Weighing the Filter
Carefully lift the filter out of the cassette using tweezers. Post weigh the filter.
The difference between the pre and post weights will give the respirable sample.
Transportation
If further analysis is required, prepare the sample for transportation to the laboratory by
carefully placing the filter back in the cassette, and fitting the yellow, U shaped sealing
clip over the cassette inlet and outlet holes. Use of the sealing clip prevents unwanted
ingress or loss of contaminant during transport. Alternatively, a filter transport cassette
(SKC P/N 225-67-10) can be used, freeing the filter cassette for immediate re-use.
