Personal Modular Impactor (PMI)
The patented SKC single-stage Personal Modular Impactors are designed for the highly efficient collection of PM10, PM2.5, or PM Coarse (PM10-2.5). The 25 mm pre-oiled impaction disc 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 alternative impaction substrate for optional chemical analysis of particles. The PMI Coarse model includes a second filter cassette to allow collection of particles less than 10 µm but larger than 2.5 µm.
- Convenient modular design for easy operation
- Removable filter cassette for easy media changes
- Disposable ready-to-use pre-oiled compaction discs - no cleaning or greasing
- Convenient clip for mounting sampler in the breathing zone
- Use with any constant flow pump at 3 L/min
- Compact and lightweight - weighs only 71 g
- Closely follows PM2.5 and PM10 as defined by EPA
- PMI PM10 model is suitable for ACGIH thoracic TLVs, including sulphuric acid and cotton dust as thoracic particulate matter
| Flow Rate | 3 L/min | |
| 50% Cut-point | 2.5, 10 µm or Coarse, depending on model | |
| Impaction Substrate | 25 mm pre-oiled disposable porous plastic disc to reduce particle bounce or 25 mm filter for optional chemical analysis | |
| Material | Inlet: Precision-tooled Aluminium Exhaust: PVC Filter Cassette: Delrin® with stainless steel support screen O-rings: Inlet: PTFE, Exhaust BUNA-N |
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| Final Collection Filter | 37 mm, selection material based on application | |
| Tubing | 1/4 inch (6.25mm) ID | |
| Dimensions | 5.1 x 2.6 cm (2 x 1 in) | |
| Weight | 70.9g (2.5 oz) | |
| Analysis | Gravimetric and chemical |
| Description | Pack Size | Part Number | |
| Personal Modular Impactor (PMI) (gold) includes:
impactor and filter cassette with support screen for PM2.5 † |
Each | 225-352 |  |
| Personal Modular Impactor (PMI) (silver) includes:
impactor and filter cassette with support screen for PM10 † |
Each | 225-350 |  |
| Personal Modular Impactor (PMI) (gold/silver) includes:
impactor and filter cassette with support screen for PM Coarse, includes 2 filter cassettes and filter retainer. † |
Each | 225-351 |  |
† Requires impaction substrate and collection media, sold separately.
| Description | Pack Size | Part Number | |
| Quartz Filters, 37 mm, Tissuquartz™, 432 µm thick | 25 | 225-1822 |  |
| PTFE Filters, 37 mm, 2.0 µm pore size, with PMP support ring ‡ | 50 | 225-1709 | |
| PTFE Filters, 37 mm, 1.0 µm pore size, with laminated PTFE support ‡ | 150 | 225-3705 | |
| Recommended Impaction Substrate. Pre-oiled Porous Plastic discs, 25 mm, ready to use, disposable, required for sampling. |
25 50 |
225-355 225-355A |
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| PM Coarse Ring includes filter cassette and retainer, adapts a PMI PM10 to a PMI PM Coarse | Each | 225-3512 |  |
| Replacement Filter Cassette | Each | 225-356 |  |
| PMI Cassette Opener | Each | 225-357 |  |
| PMI Calibration Adaptor | Each | 225-358 |  |
| Replacement PMI Exhaust O-ring | Each | P32001 | |
| Filter Retainer, secures filter to impaction substrate position on top of cassette. Included in 225-3512 | Each | 225-354 |  |
‡ Back pressure on PTFE filters can vary within the same lot.
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Personal Modular Impactor (PMI) |