Personal Modular Impactor (PMI)

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
    
    
• Convenient modular design for easy operation
  • Removable filter cassette for easy media changes
  • Disposable ready-to-use pre-oiled impaction discs reduce particle bounce for high collection efficiency — no cleaning or greasing
  • Convenient clip for mounting sampler in the breathing zone
    
    
  
  
• PMI PM10 model is easily converted with accessory ring to measure PM Coarse



• PMI PM10 model is suitable for ACGIH® thoracic TLVs®
  • Including sulfuric acid and cotton dust 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 Single-stage 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 disc. PMI media changes are as easy as removing the filter cassette and replacing it with one already loaded with a 37-mm final filter. 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 alternate impaction substrate for optional gravimetric or chemical analysis of particles. The PMI Coarse model and the Coarse Ring accessory include a second filter cassette to allow collection of particles sized between 2.5 µm and 10 µm.

Collection Efficiency of PMI 2.5 and PMI 10 Samplers
(Click to enlarge)

About PMI Coarse (PM10-2.5)
When using the PMI Coarse (see Figure 2), air is drawn through a PM10 inlet. Particles > 10 µm collect on an oiled impaction disc mounted in the top of the first filter cassette. No filter is loaded inside this cassette. The air proceeds through a PM2.5 impactor (coarse ring). Particles sized between 10 µm and 2.5 µm (10-2.5 µm) collect on a 25-mm filter placed in the impaction substrate position in the top of the second filter cassette. Particles < 2.5 µm collect on the 37-mm final filter inside the second filter cassette. Filters are sent to a laboratory for gravimetric and chemical analyses.

Performance Profile

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.

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 (gold)		225-352
	PM10 (silver)		225-350
	PM Coarse, includes 2 filter cassettes and filter retainer		225-351
Recommended Collection Filters
Quartz Filters, 37 mm, Tissuquartz™, 432 µm thick, pk/25			225-1822
PTFE Filters, 37 mm, 2.0-µm pore size, with PMP support ring, pk/50 Back pressure on PTFE filters can vary within the same lot.			225-1709
PTFE Filters, 37 mm, 1.0-µm pore size, with laminated PTFE support, pk/50 Back pressure on PTFE filters can vary within the same lot.			225-2705
Recommended Impaction Substrate, required for sampling. Limited shelf-life
Pre-oiled Porous Plastic discs, 25 mm, ready to use, disposable. A 25-mm filter may be used as an alternative impaction substrate for optional chemical analysis.	pk/25		225-355
	pk/50		225-355A
Accessories
PM Coarse Ring includes filter cassette and retainer, adapts a PMI 10 to a PMI Coarse			225-3512
Replacement Filter Cassette			225-356
PMI Cassette Opener			225-357
Forceps, stainless steel, non-serrated flat tips			225-8371
Filter-Keepers, 37 mm, for filter transport, pk/100			225-8303
Filter-Keepers, 37 mm, for filter transport, pk/10			225-8303A
PMI Calibration Adapter			225-358
Replacement PMI Exhaust O-ring, ea			P32001
Filter Retainer, secures filter to impaction substrate position on top of cassette. Included in Cat. No. 225-3512			225-354

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)