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Personal Modular Impactors (PMIs)
Highly Efficient Personal PM10, PM2.5, or PM Coarse Sampling
- Models available for PM10, PM2.5, or PM Coarse (10-2.5) sampling
- Use with any constant flow pump at 3 L/min
- Closely follows PM2.5 or PM10 as defined by EPA
- Compact and lightweight — only 2.5 ounces (71
grams)
- Ideal for personal or micro-environmental sampling
- Ideal for personal or micro-environmental sampling
- Convenient modular design for easy operation
- Removable filter cassette for easy media changes
- Disposable ready-to-use pre-oiled impaction disks reduce particle bounce for high collection efficiency — no cleaning or greasing
- Convenient clip for mounting sampler in the breathing zone
- PMI 10 model is easily converted to measure PM Coarse with accessory ring
- PMI 10 model is suitable for ACGIH® thoracic TLVs®
- Including sulfuric acid as thoracic particulate matter
- Including sulfuric acid as thoracic particulate matter
SKC Personal Modular Impactors Operating Instructions (PDF)
SKC Personal Modular Impactors Spec. Sheet (PDF)
SKC Personal Modular Impactors Performance Profile (PDF)
Modular Impactors Poster Presentation (PDF)
SKC Personal Modular Impactors
The patented (U.S. Patent No. 7,334,453) SKC Personal Modular Impactors (PMIs) are designed for the highly efficient collection of PM10, PM2.5, or PM Coarse (10-2.5). The samplers are easy to use with a removable filter cassette and pre-oiled impaction disk. The 25-mm pre-oiled impaction disk mounts directly on top of the filter cassette and reduces particle bounce for high collection efficiency. A 25-mm filter may be used as an alternate impaction substrate for optional chemical analysis of particles. The PMI Coarse model includes a second filter cassette to allow collection of particles < 10 µm, but larger than 2.5 µm.
PMI Performance
The graph below demonstrates the high sampling efficiency of the
PMI PM2.5 and PM10 Samplers when compared to the EPA PM2.5 and
PM10 curves. For more information, see the Modular
Impactors Poster Presentation (PDF).
Collection Efficiency of PMI 2.5 and PMI 10 Samplers
(Click to enlarge)
Performance Profile
| Flow Rate | 3 L/min for all models |
| 50% Cut-point | 10 µm or 2.5 µm (model dependant) |
| Material | Inlet: Precision-tooled aluminum |
| Exhaust: PVC | |
| Filter Cassette: Delrin® with stainless steel support screen |
|
| Final Collection Filter | 37-mm filter, select filter material based on application |
| Impaction Substrate | 25-mm pre-oiled, disposable porous plastic disk to reduce particle
bounce or 25-mm filter for optional chemical analysis |
| Analyses | Gravimetric and chemical |
| Dimensions (without clip) |
Diameter: 2 in (5.1 cm) |
| Height: 1 in (2.6 cm) | |
| Weight: 2.5 oz (70.9 gm) |
The PMI Samplers may be used with any constant flow sample pump capable of
maintaining a constant 3 L/min flow rate. However, partnering a PMI
Sampler with an AirChek XR5000 Sample Pump creates a highly efficient sampling
system. The compact, lightweight XR5000 pump is ideal for personal sampling.
Ordering information
| Description | Cat. No. |
||
| Personal Modular
Impactor (PMI) includes impactor and filter cassette
with support screen, requires impaction substrate and collection
media sold separately; see below |
PM2.5 |  |
|
| PM10 |  |
||
includes 2 filter cassettes |
 |
||
| Recommended Collection Filters | |||
| Quartz Filters, 37 mm, Tissuquartz™, 432 µm thick, pk/25 | |||
| PTFE Filters, 37 mm,
2.0-µm pore size, PTFE with PMP support ring, pk/50 Back pressure on PTFE filters can vary within the same lot. |
|||
| PTFE Filters, 37 mm,
1.0-µm pore size, PTFE with laminated PTFE support, pk/50 Back pressure on PTFE filters can vary within the same lot. |
|||
| Impaction Substrate | |||
| Pre-oiled Porous Plastic
Disks, 25 mm, ready to use, disposable, required
for sampling, limited shelf-life A 25-mm filter may be used as an alternative impaction substrate for optional chemical analysis. |
pk/25 | ||
| pk/50 | |||
| Accessories | |||
| PM Coarse Ring includes filter cassette, adapts a PMI 10 to a PMI Coarse | |||
| Replacement Filter Cassette | |||
| PMI Cassette Opener | |||
| Forceps, stainless steel, non-serrated flat tips | |||
| Filter-Keepers, 37 mm, for filter transport, pk/100 | |||
| Filter-Keepers, 37 mm, for filter transport, pk/10 | |||
| PMI Calibration Adapter | |||
| Replacement PMI Exhaust O-ring, ea | P32001 | ||
SKC Personal Modular Impactors Operating Instructions (PDF)
SKC Personal Modular Impactors Spec. Sheet (PDF)
SKC Personal Modular Impactors Performance Profile (PDF)
Modular Impactors Poster Presentation (PDF)
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