Inhalable dust sampling using the i.o.m. sampler – SKC Limited Universal Pump Step By Step Guide User Manual
Page 5
www.skcltd.com
224-G3 Issue C
Page 3
Inhalable Dust Sampling using the I.O.M. Sampler
For information on using the I.O.M. sampler for respirable dust fractions
please contact SKC customer support on +44 (0) 1258 480188
1. Mount one of the filter papers into the I.O.M.
cassette. Place the cassette into the sampler body
and screw on the front cover.
2. Connect the I.O.M. sampler with filter paper fitted,
to the inlet hosetail of the sample pump using the
flexible tubing. The inlet hosetail on the Universal is
mounted on the right hand side of the pump.
3. To set the flow rate required, in this case 2.0
litre/minute, a flow calibration device such as a
Defender primary calibrator or a rotameter, and a
‘calidaptor’ should be used. Make sure the flow
calibrator is capable of measuring the required
flow rate. There are two types of float used in
rotameters. To read them correctly depends on
the type. To read a ball type rotameter correctly
take the reading at the centre of the ball. To read
a float type rotameter correctly take the reading
at the top edge of the float. The float of a float
0
5
0
5
0
5
3
3
2
2
1
1
0
0
The correct flow rate for the I.O.M. sampler is 2.0 litre/min
Inhalable dust is taken to mean any solid particle which
by its small size can be carried in an airflow or remains
airborne. It includes the thoracic and respirable dust
fractions. The inhalable dust fraction size is defined in
the standard EN481. More information is also given in
SKC’s Basic Step By Step Guide (224-G1).
You will need :-
•
Universal sample pump (fully charged)
•
I.O.M. sampler
•
A length of flexible tubing
•
Two filter papers from the same box or batch
•
Flow calibration device capable of measuring 2
litre/min, such as the Defender primary calibrator
or a rotameter
•
‘Calidaptor’ calibration adaptor for the I.O.M.
sampler
•
Toolkit to adjust the pump flow rate
NOTE:
MDHS
14/3
states that a primary
standard such as the
Defender should be used
for flow calibration in
favour of rotameters.