Personal Modular Impactors (PMIs)

Highly Efficient User-friendly Personal PM10, PM2.5, or PM Coarse Sampling

• Available for PM10, PM2.5, or PM Coarse _{(PM 10-2.5)}sampling



• Use with any constant flow pump at 3 L/min



• Closely follows PM2.5 or PM10 as designed by EPA



• Compact and lightweight - only 2.5 oz!
  • Ideal for personal sampling
    
    
• Convenient modular design for easy operation
  • Removable filter cassette for easy media changes
  • Disposable ready-to-use pre-oiled impaction substrate reduces particle bounce for high collection efficiency — no cleaning or greasing
  • Convenient clip for mounting sampler in the breathing zone
    
    
• PMI 10 is easily converted to measure PM Coarse with accessory ring



• PMI 10 suitable for ACGIH® thoracic TLV®s
  • 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)

 

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_(PM10-2.5). The samplers are easy to use with a removable filter cassette and pre-oiled impaction substrate. PMI media changes are as easy as removing the filter cassette and replacing it with one already loaded with a 37-mm filter. The 25-mm pre-oiled impaction substrate 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)

 

Performance Profile

Flow Rate:	3 L/min for all models
50% Cut-point:	10 µm, 2.5 µm, or 10 µm and 2.5 µm (PM Coarse)
Material:	Inlet: Precision-tooled aluminum
	Exhaust: PVC
	Filter Cassette: Delrin® with stainless steel support screen
Collection Media:	Any 37-mm filter
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 inches (5.1 cm)
	Height: 1 inches (2.6 cm)
	Weight: 2.5 oz (70.9 gm)

 

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 substrate 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 filter placed in the impaction substrate position in the top of the second filter cassette. Particles < 2.5 µm collect on the filter inside the second filter cassette. Filters are sent to a laboratory for gravimetric and chemical analyses.

Figure 1. PMI 2.5 exploded		Figure 2. PMI Coarse exploded

 

 

Partner AirChek® XR5000 Pump with PMI

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		225-352
	PM10		225-350
	PM Coarse, includes 2 filter cassettes		225-351
Recommended Collection Media			Cat. No.
Quartz Filters, 37 mm, Tissuquartz™, 432 µm thick, pk/25			225-1822
PTFE (Teflon) Filters, 37 mm, 2.0 µm pore size, PTFE with PMP support ring, pk/50 Back pressure on PTFE (Teflon) filters can vary within the same lot.			225-1709
PTFE (Teflon) Filters, 37 mm, 1.0 µm pore size, PTFE with laminated PTFE support, pk/50 Back pressure on PTFE (Teflon) filters can vary within the same lot.			225-2705
Impaction Substrate			Cat. No.
Impaction Substrate, 25-mm, pre-oiled porous plastic disks, 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		225-355
	pk/50		225-355A
Accessories			Cat. No.
Coarse Ring, includes filter cassette, 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
	pk/10		225-8303A
PMI Calibration Adapter			225-358

SKC Personal Modular Impactors Operating Instructions (PDF)

SKC Personal Modular Impactors Spec. Sheet (PDF)

SKC Personal Modular Impactors Performance Profile (PDF)

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This page was last modified April 30, 2008