SKC Preloaded Disposable Parallel Particle Impactors (PPI) Cat. Nos. 225 3841, 3851, 3861, 3862, And 3871 Operat 38056
User Manual: 38056
Open the PDF directly: View PDF 
.
Page Count: 8
SKC Preloaded Disposable
Parallel Particle Impactors (PPI)
The patented† impaction-based SKC Disposable Parallel Particle
Impactor (PPI) Samplers are designed to match precisely the
collection efficiency curves for respirable and thoracic dust
specified by ISO 7708/CEN and adopted by ACGIH, CEN, and
other occupational hygiene organizations. The performance of
the respirable PPI samplers also meets the ISO 7708/CEN criteria
included in the OSHA fi nal silica rule. The thoracic model meets the
requirements of NIOSH Method 5524 for metalworking fl uids and
compounds with ACGIH® thoracic TLV®s. Disposable PPI Samplers
off er the convenience of single use to eliminate sampler assembly and
cleaning; small size for worker comfort, even under helmets or other
PPE; and a choice of fl ow rates for maximum fl exibility in pump options,
sample duration, and contaminant concentration. These instructions
are for PPI models pre-assembled with fi lter, support, and impaction
substrates. Note: PPIs 225-3841, 225-3851, and 225-3871 are preloaded with a
5.0-μm PVC fi lter for chemical analysis. For gravimetric analysis, contact your
laboratory to pre and postweigh the fi lter.
† U.S. Patent No. 7,073,402
Performance Profi le
Sampling Rate: 2 L/min respirable or thoracic, 4 or 8 L/min respirable
Sample Pump: • Universal XR or AirChek® Series for 2 and 4 L/min
• Leland Legacy for 8 L/min
Sample Time: Dependent on method used.
Note: SKC tests indicate that a particulate mass of up to
6.8 mg on the four impaction substrates would not aff ect PPI performance. This amount is
equivalent to sampling for 6 hours in environments where respirable mass concentration
is 4.76 mg/m3. However, labs have reported to SKC that they prefer no more than
2 mg on the fi lter for analytical reasons. Therefore, SKC recommends that you
work with your lab to determine optimum sample times for your unique sampling
conditions.
Sample Media: Respirable models: 37-mm, 5.0-μm PVC fi lter (not preweighed) and cellulose
support pad
Thoracic model: 37-mm, 0.8-μm MCE fi lter (not preweighed) and cellulose
support pad or 37-mm Quar fi lter (not preweighed) and cellulose support
pad
Impaction Four 3/8-in diameter pre-oiled porous plastic discs
Substrate: (assembled in all Disposable PPIs)
Analysis: Chemical
Body Material: Conductive ABS plastic
Dimensions:
Height: 4.25 in (10.8 cm) - clip to exhaust
Diameter: 1.8 in (4.6 cm)
Depth: 1.2 in (3 cm)
Weight: 1.1 oz (31.2 gm)
Shelf-life: 18 mos from date of manufacture
Operating Instructions
863 Valley View Road, Eighty Four, PA 15330 USA
Tel: 724-941-9701 • www.skcinc.com
2
Principle of Operation
SKC Disposable PPI Samplers are impaction-based fi lter samplers that perform precise
size-selection for either thoracic or respirable dust, depending on the model. PPI Samplers
contain four small impactors in the inlet section of the device. Each impactor features
a unique 50% cut-point to target a specifi c one-quarter segment of the ISO/CEN curve
resulting in a precise fi t along the entire curve. A sample pump operating at 2, 4, or 8 L/
min (2 L/min only for thoracic) pulls air through the inlet nozzle of each impactor in the
inlet plate. Particles larger than each impactor’s 50% cut-point are scrubbed and retained by
impaction onto the porous oiled impaction substrate contained in each impactor. Smaller
particles continue to the standard 37-mm collection fi lter for analysis.
Collection effi ciency of the 2, 4, and 8 L/min
respirable PPI Samplers compared to the
ISO respirable curve
Protective
end cap
Base plate
Inlet plate (contains 4 impac-
tors with unique cut-points
preloaded with 4 impaction
substrates and sonically
welded)
Collar clip
Standard 37-mm collection
fi lter (assembled)
37-mm support pad
(assembled)
Exhaust
to pump
PPI Performance
Dust enters here
Collection effi ciency of the 2 L/min
thoracic PPI Sampler compared to the
ISO thoracic convention
3
Sampler Preparation
SKC Preloaded Disposable PPIs are supplied assembled and ready to use.
Note: Preloaded fi lters are not preweighed. PPIs 225-3841, 225-3851, and 225-3871 are
preloaded with a 5.0-μm PVC fi lter for chemical analysis. For gravimetric analysis, contact
your laboratory to pre and postweigh the fi lter.
1. Remove shrink wrap.
2. Write sample ID on sampling label. Adhere sampling label to bo om of
base plate.
3. Remove protective cap from exhaust.
Calibration and Sampling
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 AirChek
Series or Leland Legacy depending on fl ow rate requirements.
Calibration
Calibrate the pump fl ow rate with a representative Preloaded Disposable PPI
sampler. See pump and calibrator operating instructions.
1. Ensure the pump has run for 5 minutes before calibrating.
2. Ensure representative impactor is loaded with a support and collection fi lter
and that it is fully assembled. See Sampler Preparation above.
3. Align the bo om of the calibration adapter with the inlet plate of an assembled,
loaded representative Disposable PPI and press down firmly until the
calibration adapter’s O-ring is engaged and creates an even seal.
4. Use fl exible tubing to connect the exhaust of the Disposable PPI to the inlet of
a sample pump.
5. Use fl exible tubing to connect the inlet of the calibration adapter to the suction
port (outlet) of a calibrator.
2
4
6. Calibrate to 2 L/min for the 2 L/min respirable and thoracic model PPIs,
4 L/min for the 4 L/min respirable model, or 8 L/min for the 8 L/min respirable
model. Follow the calibration instructions in the pump and calibrator operating
instructions.
7. When calibration is completed, disconnect the tubing from the calibrator and
calibration adapter.
8. Grasp the Disposable PPI with one hand and the calibration adapter with
the other hand. Firmly pull/twist to remove the calibration adapter from the
Disposable PPI inlet plate.
9. Replace the representative Disposable PPI used to set the fl ow with a new
loaded Disposable PPI for sample collection.
Caution: Using excessive
pressure to seal the calibration
adapter to the Disposable PPI
may make the calibration adapter
diffi cult to remove.
Sample
pump
Calibrator
Flexible
tubing
Disposable PPI
Calibration
adapter
Flexible
tubing
5
Sampling
SKC tests indicate that a particulate mass of up to 6.8 mg on the four impaction
substrates would not affect PPI performance. This amount is equivalent to sampling
for 6 hours in environments where respirable mass concentration is 4.76 mg/m3.
However, labs have reported to SKC that they prefer no more than 2 mg on the
fi lter for analytical reasons. Therefore, SKC recommends that you work with your
lab to determine optimum sample times for your unique sampling conditions.
1. As per good industrial hygiene practice, replace representative sampler used
for calibration with a new, unused preloaded sampler.
2. Record sample start time on label.
3. Clip Disposable PPI onto a worker’s collar or lapel in the breathing zone or in
the area to be sampled.
4. Clip sample pump at the worker’s waist or close to the Disposable PPI.
5. Use fl exible tubing to a ach the Disposable PPI exhaust
to the inlet of the sample pump.
6. Turn on pump and record pertinent sample data.
7. After the desired sample time has elapsed, turn off the
pump and unclip sampler from sampling location.
8. Apply Post-use label to inlet plate to seal the
sampler.
9. Record sample stop time on label on the bo om
of sampler.
10. Disconnect sampler from pump and reinstall
protective end cap to the exhaust.
11. Reinstate calibration train with representative
Disposable PPI and verify fl ow rate. See Calibration.
8
10
10
3
6
-
6
Sample Transport and Analysis
Package and transport samples and blanks to an accredited laboratory for gravimetric
or chemical analysis.
References
Trakumas, S., Hall, P., Personal Respirable Sampler Containing Four Impactors Arranged in Parallel,
Abstracts of 23rd Annual AAAR Conference, Atlanta, GA, 2004, p. 78
Trakumas, S., Salter, E., “Parallel Particle Impactor - Novel Size-selective Particle Sampler for
Accurate Fractioning of Inhalable Particles,” Journal of Physics: Conference Series 151 (2009), 16 pp.,
012060, www.skcinc.com/instructions/Parallel Particle Impactor Paper.pdf
Reference 2 is an author-created, non-copyrighted version of an article accepted
for publication in the Journal of Physics; Conference Series 151. IOP Publishing Ltd.
is not responsible for any errors or omissions in this version of the manuscript
or any version derived from it. The defi nitive publisher authenticated version is
available online. Go to h p://dx.doi.org, enter doi: 10.1088/1742-6596/151/1/012060.
Trakumas, S., “High-fl ow Personal Respirator Dust Sampler for Increased Sensitivity,” Poster 261,
AIHce 2010, Denver, CO
Trakumas, S., “High-fl ow Personal Sampler to Monitor Exposure to Respirable Crystalline Silica at
New Lower TLV,” IOHA 2010 8th Conference Book of Abstracts, Rome, p. 59
Trakumas, S., Salter, E., “High-Flow Personal Sampler to Monitor Exposure to Respirable Crystalline
Silica at New Lower TLV” PowerPoint Presentation
OSHA Final Rule on Respirable Crystalline Silica, www.osha.gov/silica/
ISO 7708:1995 (2008), Air Quality — Particle Size Fraction Defi nitions for Health-related Sampling,
www.iso.org, search on 7708
Stacey, P., Thorpe, A., and Echt, A., “Performance of High Flow Rate Personal Respirable Samplers
When Challenged with Mineral Aerosols of Diff erent Particle Size Distributions,” Ann. Occup. Hyg.,
60, 2016, pp. 479-492, h p://annhyg.oxfordjournals.org/content/60/4/479.full.pdf
Görner, P., Simon, X., Boivin, A., Bau, S., “Sampling Effi ciency and Performance of Selected Thoracic
Aerosol Samplers,” Annals of Work Exposure and Health, 2017, Vol. 61, No. 7, 784-796
7
Ordering Information
Preloaded Disposable Plastic PPI Samplers, select the PPI for the
desired convention. Designed for one-time use Cat. No.
Preloaded Disposable PPI Samplers contain four porous plastic
disc impaction substrates, one 37-mm collection fi lter, and one 37-mm
cellulose support
Respirable PPI (red), 8 L/min, plastic, 5.0-μm PVC fi lter**
Respirable PPI (orange), 4 L/min, plastic, 5.0-μm PVC fi lter**
225-3841
225-3871
Respirable PPI (gold), 2 L/min, plastic, 5.0-μm PVC fi lter** 225-3851
Thoracic PPI (blue), 2 L/min, plastic, 0.8-μm MCE fi lter 225-3861
Thoracic PPI (blue), 2 L/min, plastic, Quartz fi lter 225-3862
Accessory
Calibration Adapter for Disposable PPI 225-389
** PPIs 225-3841, 225-3871, and 225-3851 are preloaded with 5.0-μm PVC fi lter for chemical analysis. For gravimetric
analysis, contact your laboratory to pre and postweigh PVC fi lter.
For user-loaded disposable PPI for gravimetric
determinations or reusable aluminum PPI Samplers,
visit www.skcinc.com/prod/225-380.asp.
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.
