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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 effi ciency curves for respirable and thoracic dust
specified by ISO 7708/CEN and adopted by ACGIH, CEN,
and other occupational hygiene organizations. Performance
data of the PPI Samplers relative to the ISO 7708/CEN criteria
was published in the Journal of Physics, Conference Series 151,
2009, and the data was made part of the OSHA Docket used
to develop the OSHA fi nal silica rule (fi nal rule page 16439).
The thoracic model meets the requirements of NIOSH Method 5524
for metalworking fl uids and compounds with ACGIH
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 that
are NOT preloaded with fi lters and supports; these models contain only impaction
substrates.
Performance Profi le
Sampling Rate: 2 L/min respirable or thoracic and 4 or 8 L/min respirable
Sample Pump: • Universal or AirChek
• 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 at 4 L/min in
environments where respirable mass concentration is 4.76 mg/m
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.
Sample Media 37-mm, 5.0-μm PVC fi lter, 37-mm, 2.0-μm PTFE fi lter*
(recommended):
(NIOSH 5524), or 37-mm, 0.8-μm MCE fi lter
Use cellulose or stainless steel screen for support
Impaction
Four 3/8-in diameter pre-oiled porous plastic discs
Substrate:
(assembled in all Disposable PPIs)
Analysis:
Gravimetric and/or 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
† U.S. Patent No. 7,073,402
* Back pressure on PTFE fi lters can vary within the same lot.
SKC User-loaded Disposable
Operating Instructions
863 Valley View Road, Eighty Four, PA 15330 USA
Tel: 724-941-9701 • www.skcinc.com
®
thoracic TLV
®
Series for 2 and 4 L/min
®
s.
3
and equals
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Summary of Contents for SKC Disposable Parallel Particle Impactor
- Page 1 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.
- Page 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...
- Page 3 Media and Sampler Preparation Media Preparation Condition and weigh fi lters according to method used. Record the weight as the pre-sample weight. Sampler Preparation The PPI will arrive with the inlet plate shrink wrapped and base plate separated. Remove shrink wrap from inlet plate. Using forceps, insert fi...
- Page 4 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 pump fl...
- Page 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 at 4 L/min in environments where respirable mass concentration is 4.76 mg/m...
- Page 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,”...
- Page 7 * Back pressure on PTFE fi lters can vary within the same lot. 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...
- Page 8 www.skcinc.com Form 38055 Rev 1901...
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