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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 specifi ed 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
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.
Preloaded fi lters in some models are available preweighed by SKC for gravimetric
analysis. See the table below.
Respirable PPIs
225-3841
225-3851
225-3871
225-3841-PW
225-3851-PW
225-3871-PW
Thoracic PPIs
225-3861
225-3862
† U.S. Patent No. 7,073,402
SKC Preloaded Disposable
Preloaded Filter
5.0-μm PVC fi lter for chemical analysis, not preweighed. For gravimetric analysis,
contact your laboratory to pre and postweigh fi lter.
5.0-μm PVC fi lter preweighed by SKC for gravimetric analysis
Preweighed at 70 F ± 3 F and 50% ± 5% relative humidity
Preloaded Filter
0.8-μm MCE fi lter, not preweighed
Quartz fi lter, not preweighed
Operating Instructions
863 Valley View Road, Eighty Four, PA 15330 USA
Tel: 724-941-9701 • www.skcinc.com
®
thoracic TLV
®
)
®
s. Disposable
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Summary of Contents for SKC Preloaded Disposable Parallel Particle Impactor
- Page 1 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. Preloaded fi lters in some models are available preweighed by SKC for gravimetric analysis. See the table below. Respirable PPIs...
- Page 2 PPI performance. This amount is equivalent to sampling for 6 hours at 4 L/min in environments where respirable mass concentration is 4.76 mg/m and equals 50% of total dust. 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.
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Page 3: Principle Of Operation
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... - Page 4 Sampler Preparation SKC Preloaded Disposable PPIs are supplied assembled and ready to use. For gravimetric analysis: PPIs 225-3841-PW, 225-3871-PW, and 225-3851-PW are preloaded with a preweighed 5.0-μm PVC fi lter. If using PPIs preloaded with a 5.0-μm PVC fi lter that has not been preweighed (Cat. Nos. 225-3841, 225-3871, and 225-3851), contact your laboratory to pre and postweigh fi...
- Page 5 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.
- Page 6 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 at 4 L/min in environments where respirable mass concentration is 4.76 mg/m...
- Page 7 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,”...
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Page 8: Ordering Information
225-389 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 htt p://www.skcinc.com/warranty.
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