IMPACT Sampler, for PM2.5 Sampling at 10 L/min

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Part Number: 225-392
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IMPACT Sampler, for PM2.5 Sampling at 10 L/min Overview

IMPACT Sampler for PM2.5 includes sampler inlet and body, filter cassette, calibration adapter, and rain cover for sampler; requires collection media and impaction substrate sold separately; suitable for use with sampling pumps operating at 10 L/min

Patented IMPACT Samplers are single-stage inertial impactors that sample PM10, PM2.5, or PM Coarse (10-2.5) at 10 L/min in ambient air. The higher flow rate provides increased sampling sensitivity, making it ideal for environmental PM sampling and indoor air studies. The IMPACT’s removable filter cassette and disposable pre-oiled impaction discs make it fast and easy to deploy (no cleaning or greasing). IMPACT is the sampling head in the SKC Deployable Particulate Sampler (DPS) System. SKC recommends using IMPACT with the Leland Legacy Sample Pump.


Performance Profile

Flow Rate
10 L/min
50% Cut-point
2.5 µm or 10 µm (model dependent)
Impaction Discs
Recommended impaction disc to reduce particle bounce: 37-mm disposable pre-oiled porous plastic disc

For chemical analysis of larger particles: 37-mm filter (quartz or PTFE)
Back pressure on PTFE filters can vary within the same lot.
Collection Filter
47-mm filter (requires impaction substrate), select material based on application
Impactor Material
Aluminum (inlet) with brass barbed fitting for 3/8-in ID tubing
2.6 dia. X 1.8 H x 3.8 L in (7 x 5 x 10 cm)
0.5 lb (0.23 kg)
  • Sampler Class : PM2.5
  • Cut-point : 2.5 μm
  • Flow rate : 10 L/min
  • Disposable : No
  • Sampler Type : Impactor
  • Calibration Adaptor? : Yes

The patented (U.S. Patent No. 7,334,453) SKC IMPACT single-stage inertial impactor is designed for the efficient collection of PM10, PM2.5, or PM Coarse (10-2.5 ) in ambient air. A sampling pump operating at 10 L/min draws particles through the impactor; larger particles are captured on a disposable pre-oiled impaction substrate while smaller particles collect on a 47-mm filter. IMPACT media changes are as easy as removing the filter cassette and replacing it with one already loaded. IMPACT’s higher flow rate requirement provides increased sensitivity to low levels of PM. For sampling efficiency data, see the Modular Impactors Poster Presentation (PDF).

Impact PM Coarse Sampling

Exploded view of IMPACT PM Coarse Sampler
(O-rings not shown)

When using an IMPACT PM10 Sampler with the Coarse Ring accessory or an IMPACT PM Coarse Sampler (see Ordering Information), particles are drawn through a PM10 inlet. Particles > 10 µm collect on an oiled impaction disc mounted on top of the first filter cassette. No collection filter is loaded inside this cassette. Smaller particles proceed through a PM2.5 impactor (coarse ring). Particles < 10 µm and > 2.5 µm collect on a filter placed in the impaction disc position on top of the second filter cassette. Particles < 2.5 µm collect on the 47-mm filter inside the second filter cassette. Send filters to a laboratory for gravimetric and chemical analyses.

SKC IMPACT Sampler and Leland Legcy Air Sampling Pump

IMPACT and the Leland Legacy Sample Pump
While IMPACT can be used with any pump at 10 L/min, partnering IMPACT with the Leland Legacy pump provides a highly efficient sampling system. The quiet, fully programmable Leland Legacy pump can provide a constant 10 L/min flow rate for 24 hours making it ideal for 24-hour environmental monitoring or indoor air studies. IMPACT and the Leland Legacy Sample Pump are both included in the DPS Sampling System.