Application Note

5 Fluke Corporation Indoor air quality: Can your schools pass the test?
Particle count examples
Here are three sample readings from a
Fluke 983 Particle Counter, taken in and
around an elementary school.
This sample was taken outdoors.
It’s the baseline for comparing indoor
measurements to.
This sample was taken from ambient
classroom air. From this sample alone
we can’t tell where the pollutants are
coming from, but note that they are
significantly less than the baseline out-
side readings. Use the particle counter
near the supply ducts, doors, windows,
and other areas of possible contamina-
tion, to determine whether a repair is
necessary.
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Printed in U.S.A. 7/2005 2519671 A-EN-N Rev A
Fluke. Keeping your world
up and running.
This sample was taken near the car-
pet, right after people had walked by, to
simulate the effect of particles kicked up
by student activity. Compare the particle
counts to the baseline. This could sug-
gest the need to vacuum more fre-
quently, ideally with a HEPA-installed
vacuum, to reduce the risk of asthma.
Note especially the elevated levels of
particulates between 1 and 10 microns,
when compared to the ambient readings.