SKC User-loaded Disposable
Parallel Particle Impactors (PPI)
The patented
†
impaction-based SKC Disposable Parallel Particle
Impactor (PPI
®
) Samplers are designed to match precisely the
collection e
ffi
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
®
thoracic TLV
®
s.
Disposable PPI Samplers o
ff
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 Pro
fi
le
Sampling Rate:
2 L/min respirable or thoracic and 4 or 8 L/min respirable
Sample Pump:
•
Universal
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 a
ff
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
3
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.
Sample Media
37-mm,
5.0-
μ
m PVC
fi
lter, 37-mm, 2.0-
μ
m PTFE
fi
lter*
(recommended)
:
(NIOSH 5524), or 37-mm, 0.8-
μ
m 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.
Operating Instructions
863 Valley View Road, Eighty Four, PA 15330 USA
