Tel: 724-941-9701 Fax: 724-941-1369 e-mail: skctech@skcinc.com
Operating Instructions
863 Valley View Road, Eighty Four, PA 15330 USA
IMPACT Sampler
The patented* IMPACT Sampler is an inertial impactor designed to remove particles
larger than its cut-point by capturing them on a disposable oiled impaction disc that
reduces particle bounce. Particles that are smaller than the cut-point are collected on
a 47-mm fi lter. The IMPACT Sampler mounts easily and makes media changes fast
and simple with its convenient removable fi lter casse e.
The IMPACT Sampler is also part of a cost-eff ective portable particulate sampling
system that ensures the ability to monitor particulate ma er in indoor and outdoor
environments and in urban, industrial, or rural se ings (see Ordering Information for
details on the DPS System or visit www.skcinc.com/prod/100-3901.asp).
Performance Profi le
Flow Rate: 10 L/min
50% Cut-point: 2.5 μm or 10 μm (model dependent)
Impaction Discs: • Recommended impaction disc to reduce particle
• For chemical analysis of larger particles:
Collection Filter: 47-mm fi lter, select material based on application
Impactor Material: Aluminum (inlet) with brass barbed fi ing for
Dimensions: 2.6 dia. x 1.8 H x 3.8 L in (7 x 5 x 10 cm)
Weight: 0.5 lb (0.23 kg)
* U.S. Patent No. 7,334,453
† Back pressure on PTFE fi lters can vary within the same lot.
bounce: 37-mm disposable pre-oiled porous plastic disc
37-mm fi lter (quartz or PTFE
3/8-in ID tubing
†
)
Principle of Operation
PM2.5 inlet
(coarse ring)
37-mm fi lter
Filter cassette
top
47-mm fi nal
collection fi lter
Stainless steel
support
Filter
cassette
bottom
PM10 inlet
37-mm
impaction
disc
Filter
cassette
top
Filter
cassette
bottom
Exhaust
Collection
fi lter
Stainless
steel
support
PM10 inlet
PTFE
O-ring
37-mm
impaction
disc
Filter
cassette
BUNA-N
O-ring
Exhaust
(O-rings not shown)
Exploded view of IMPACT PM10 SamplerExploded view of IMPACT PM Coarse Sampler
Inertial impaction is employed to separate airborne particles according to their
aerodynamic diameter. A sample pump draws particle-laden air at a fl ow rate of
10 L/min through an inertial impactor to separate airborne particles according to
their aerodynamic diameter. Airfl ow enters the impactor through eight nozzles on
top of the sampler. The inlet nozzles are sized to operate at a 10 L/min fl ow rate
causing eight airjets to impinge onto the impaction disc positioned below the inlet
nozzles. Particles larger than the sampler cut-point with enough inertia to cross the
airstream lines impact on the impaction substrate. The airfl ow, containing smaller
particles, makes a sharp turn, passes through the openings in the top of the fi lter
casse e, and follows through to a 47-mm fi lter where the smaller particles collect.
The top of the fi lter casse e accommodates the impaction disc. For optimum impactor
performance, a 37-mm oiled porous plastic disc is recommended as disposable
impaction substrate. If chemical analysis of the larger particles is desired, a 37-mm
fi lter (quartz or PTFE) may be used.
To sample PM Coarse
, a coarse ring accessory can be added to an IMPACT
(PM10-2.5)
PM10 Sampler or an IMPACT PM Coarse Sampler may be selected (see Ordering
Information). Additional impaction and collection media are required for PM Coarse
sampling.
Media Preparation
Collection Filters: Equilibrate and preweigh fi lters in a clean environment according
to appropriate procedures. Record the weight as the pre-sample weight.
Impaction Disc: Ready-to-use pre-oiled disposable plastic impaction discs are available
as SKC Cat. Nos. 225-395 (qty. 25) and 225-395A (qty. 50). Using an oiled impaction
disc reduces particle bounce.
37-mm fi lters (quartz or PTFE) may be used if chemical analysis of larger particles
is desired.
2
Impactor Preparation
13456
Cleaning
For optimum performance, the IMPACT Sampler inlet, exhaust, and fi lter casse e
should be cleaned a er fi ve runs or upon a noticeable buildup of material. This
will remove oil buildup from the top of the fi lter holder and other residue built
up from frequent sampling. Disassemble the impactor and wash parts in water
with a liquid detergent or soap. Rinse and air-dry all parts thoroughly in a clean
environment.
Caution: Do not place any mechanical object in the inlet nozzles.
O-ring Care
Visually inspect the condition of the BUNA-N exhaust O-ring (see illustration on
page 2 for location). Ensure the O-ring surface is smooth (i.e., without cracks, cuts,
or other damage). Ensure the O-ring is fi ed properly in its channel. Replace the
exhaust O-ring if there is apparent damage, stretching, or thinning. It is recommended that the PTFE inlet O-ring (2 in PM Coarse model) be replaced by the
manufacturer only.
Inserting a Collection Filter into the IMPACT Sampler
The IMPACT Sampler will arrive already assembled. Disassemble it to insert
collection fi lter.
Unscrew inlet from exhaust. Remove fi lter casse e.
3a. Use the fi lter casse e opener
accessory to open fi lter casse e.
3b. Slide the fi lter casse e horizontally
into the "U" of the opener until the
two halves of the casse e loosen.
Gently pull halves apart.
Using forceps accessory, place a
preweighed 47-mm fi lter on the
support screen.
Ensure the stainless steel support
screen is in place in bo om of
fi lter casse e.
Press fi lter casse e top into
fi lter casse e bo om.
3
1
3
7
When sampling for PM Coarse using the
Coarse Ring accessory or IMPACT PM Coarse
Sampler, no collection fi lter or stainless steel
support is inserted in the fi rst fi lter casse e.
Insert a 47-mm collection fi lter into the second
fi lter casse e (refer to illustration on page 2).
Proceed to Inserting an Impaction Disc into the
Reinsert casse e into impactor.
IMPACT Sampler.
Inserting an Impaction Disc into the IMPACT Sampler
For PM2.5 or PM10 sampling only, insert an impaction disc only a er a collection
fi lter has been loaded into the fi lter casse e.
For PM2.5 or PM10 only,
ensure a collection filter
has been loaded into the
fi lter casse e (see Inserting
a Collection Filter into the
IMPACT Sampler).
Place impaction disc on 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 fi lter casse e on exhaust and screw impac-
tor inlet and exhaust together just until tight.
Further hand-tighten by 1/4 turn only.
Keep sampler upright until the inlet is
securely screwed onto the exhaust to
prevent the impaction disc from being
dislodged.
Do not overtighten impactor inlet and
exhaust. Do not use barbed fi ing as
leverage when tightening.
When sampling for PM Coarse using the
Coarse Ring accessory or IMPACT PM
Coarse Sampler, insert the impaction disc
onto the fi rst fi lter casse e as directed in Step 2.
Insert a 37-mm collection fi lter in the impaction
disc position on the second fi lter casse e sup-
plied with the Coarse Ring or the IMPACT PM
Coarse Sampler (refer to illustration on page 2).
Place the fi lter casse e assembly on the exhaust
and screw impactor inlet and exhaust together
just until tight. Further hand-tighten by 1/4
turn only.
Technical Tidbits:
• Use forceps accessory to carefully insert or remove the collection fi lter. See
Accessories for forceps.
• Install provided rain cover on the inlet of the IMPACT Sampler when sampling outdoors.
• SKC recommends using a new impaction disc for each sample.
4
Calibration and Sampling
3
4
5
1
6
Note: As the particle load on the fi lter increases during sampling, the pressure
drop will also increase. Therefore, use a compensating sample pump such as
the Leland Legacy
provide 24 hours of run time at 10 L/min at a maximum pressure drop of
12 inches water.
Calibration
Calibrate pump fl ow rate with the IMPACT Sampler in line (loaded with fi lter
and impaction disc). See pump and calibrator operating instructions.
Ensure rain cover is removed
from inlet and that impactor is
loaded and fully assembled (see
Inserting a Collection Filter
into the IMPACT Sampler and
Inserting an Impaction Disc into
the IMPACT Sampler).
®
(SKC Cat. No. 100-3002). The Leland Legacy pump will
Screw Calibration Adapter onto
impactor inlet.
Using fl exible tubing, a ach pump inlet to outlet of impactor.
Use a short length of tubing to connect inlet of calibration adapter to outlet
Calibrate the sample pump to 10 L/min.
See sample pump and calibrator
operating instructions.
of a calibrator to form a calibration train.
When calibration is completed,
disconnect calibrator and tubing
from adapter. Remove calibration
adapter from impactor.
5
Sampling
1. If required, replace representative sample media used for calibration with new,
preweighed media (see Media Preparation and Impactor Preparation).
2. Mount bracket accessory at the desired location and at
breathing zone height (6 feet or 2 meters) using wire
ties or other fasteners. Mount impactor on mounting
bracket accessory by threading clamp knob into bo om
of impactor.
3. Insert screw on rain cover into screw hole in top of impactor inlet and rotate cover until tight.
4. Turn on pump and record sample start time and other
pertinent data.
Note: If using the Leland Legacy Sample Pump, sample
start time and duration can be programmed in advance
and sampling started manually or automatically.
5. A er the desired sample time has elapsed, turn off the pump
and record sample stop time and other pertinent data.
6. Remove rain cover, reinstate calibration train, and verify
fl ow rate (see Calibration).
7. Remove pump and tubing from the impactor.
IMPACT Sampler used
with DPS System Cat. No.
100-3901. See Ordering
Information for details.
Technical Tidbit:
• The supplied rain cover should be used for all outdoor sampling.
6
4
5
3
1
Sample Removal, Shipping, and Analysis
Removing the Collection Filter and Impaction Disc
Unscrew impactor inlet from exhaust.
Gently li fi lter casse e from exhaust.
Use forceps to remove collection fi lter
and place in appropriate container for
shipping to a laboratory.
Locate recessed area on fi lter casse e top
and remove impaction disc. If chemical
analysis of larger particles is desired, place
in appropriate container for shipping to a
laboratory for analysis (see Ordering Information, Accessories for Glass Jars).
4a. Use the fi lter casse e opener to
separate the two halves.
4b. Slide the fi lter casse e horizontally
into the "U" of the opener until the
two halves of the casse e loosen.
Gently pull halves apart.
When sampling for PM Coarse using the
Coarse Ring accessory or IMPACT PM Coarse
Sampler, follow the instructions in Steps 1
through 5 for the second fi lter casse e only.
Insert media in separate containers, and ship
to a laboratory for analysis. The impaction disc
from the fi rst fi lter casse e may be shipped to
a laboratory for analysis of larger particles if
desired.
Shipping Samples
Package and transport samples and blanks in a manner that will prevent sample
loss and contamination. See Ordering Information, Accessories for the Petri Dish Slide
for transporting samples.
Analysis
Gravimetric and/or chemical by an accredited laboratory.
7
Ordering Information
Description Cat. No.
IMPACT Samplers include fi lter cassette, calibration adapter, and rain cover, require
impaction substrate and collection fi lters below PM10
PM2.5
PM Coarse includes 2 fi lter cassettes
SKC DPS System
§∞**∑
includes Leland Legacy Sample Pump with connection case,
charger (100-240 V), 2 external battery assemblies with adapters (packaged separately),
IMPACT Sampler, 2 fi lter cassettes, calibration adapter, rain cover, 25 disposable impaction
discs*, fi lter cassette opener, tubing with quick-connect fi tting, calibration tubing, and mount-
ing bracket, in a heavy-duty lockable carry case PM10
‡
Recommended Collection Filters
Quartz Filters, 47 mm, Tissuquartz
PTFE Filters
#†
, 47 mm, 2.0 μm, with PMP support ring, pk/50 225-1747
, required for each sample; select fi lters based on your applications
™
, 432 μm thick, pk/25 225-1823
Impaction Substrate for IMPACT Sampler,
PM2.5
required for each sample, select an impaction substrate based on
your application
Recommended to Reduce Particle Bounce
Impaction Discs*, 37 mm, pre-oiled, ready to use, disposable
pk/10
pk/25
pk/50
For Chemical Analysis of Larger Particles
Quartz Filters, 37 mm, Tissuquartz, 432 μm thick, pk/25 225-1822
PTFE Filters
#
, 37 mm, 2.0 μm, laminated PTFE support, pk/50 225-27-07
Accessories
PM Coarse Ring, adapts IMPACT PM10 to an IMPACT PM Coarse, includes fi lter cassette 225-3912
Mounting Bracket 225-399
Forceps, stainless steel 225-8371
Petri Dish Slides, for fi lter transport, pk/100 225-2-01
Glass Jars for Chemical Analysis pk/8
pk/36
Filter Cassette Opener 225-397
Replacement Parts
IMPACT Sampler Inlets 10 μm
2.5 μm
IMPACT Sampler Exhaust P21279
IMPACT Sampler Exhaust O-ring P31988
Rain Cover 225-398
Calibration Adapter 225-394
Filter Cassette 225-396
Stainless Steel Support 225-2647A
§ Quantity discounts available
∞ Provides data similar to data from Federal Reference Method samplers. The DPS System is not a U.S. EPA
reference or equivalent method for compliance sampling.
* Limited shelf-life
** DPS Systems with pumps contain Li-Ion ba eries and may be subject to special shipping regulations.
‡ Recommended fi lters for use with Leland Legacy Sample Pump
# Back pressure on PTFE fi lters can vary within the same lot.
† Maximum operating temperature is 464 F (240 C) based on the PMP support ring.
∑ Use in non-explosive environments only. Not UL Listed for intrinsic safety.
225-390
225-392
225-3911
100-3901
100-3903
225-395B
225-395
225-395A
225-8376
225-8377
P54202
P54204
SKC Limited Warranty and Return Policy
SKC products are subject to the SKC Limited Warranty and Return Policy, which
provides SKC’s sole liability and the buyer’s exclusive remedy. To view the complete SKC Limited Warranty and Return Policy, go to h p://www.skcinc.com/
warranty.asp.
Form #38010 Rev 1102
8
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