User guide

6
Inserting an Impaction Disc into the IMPACT Sampler
For PM2.5 or PM10 sampling, insert an impaction disc only a er a collection
fi lter has been loaded into the fi lter casse e.
Technical Tidbits
• Install the rain cover (included with the DPS System) on the inlet of the
IMPACT Sampler when sampling outdoors.
• SKC recommends using a new impaction disc for each sample.
For PM2.5 or PM10,
ensure a collection filter
has been loaded into the
fi lter casse e (see Inserting
a Collection Filter into the
IMPACT Sampler).
1
Place the impaction disc in the recessed area
on the fi lter casse e top. The rough side of the
impaction disc should face up. SKC-supplied discs
are stamped with “UP” on the appropriate side.
Place the fi lter casse e on the exhaust and screw
the impactor inlet and exhaust together just until
tight. Further hand-tighten by 1/4 turn only.
Do not overtighten the impactor inlet and
exhaust. Do not use the barbed fi  ing as
leverage when tightening.
Keep the sampler upright until the inlet
is securely screwed onto the exhaust to
prevent the impaction disc from being
dislodged.