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SKC Particle Size-selective Sampler Guide

With the many particle size-selective sampling devices available, it is sometimes difficult to gather all of the information needed to determine the one best suited for an application. Ultimately, it is the user's responsibility to choose the device required for a specific sampling application and environment. SKC offers several particle size-selective devices for the collection of respirable, PM2.5, PM10, or inhalable size particles. Use the convenient guide below to help select a device to meet your application and to find information on it in the appropriate page. Refer to the SKC Air Sampling Guides for specific compounds and methods.

Sampler	Classification	Flow Rate	50% Cut-point	Recommended Calibration Device	Filter Size	Unique Features
Button Sampler	Inhalable	4 L/min	100 µm	Button Sampler Calibration Adapter	25 mm	Low sensitivity to ambient air conditions Reduces oversampling of very large particles
IOM Sampler	Inhalable	2 L/min	100 µm	IOM Calibration Adapter	25 mm	Complies with MDHS 14/3 Meets US and international standards including the ACGIH sampling criteria for inhalable dust
GS-3 Cyclone	Respirable	2.75 L/min 3.7 L/min	4.0 µm 3.5 µm	Multi-purpose Calibration Jar	25 mm or 37 mm	Overcomes sampling problems reported with Dorr-Oliver Conductive
SKC Aluminum Cyclone	Respirable	2.5 L/min 2.8 L/min	4.0 µm 3.5 µm	Aluminum Cyclone Calibration Chamber	25 mm or 37 mm	Specified in NIOSH 7500 (silica) and NIOSH 0600 (respirable particulates)
Parallel Particle Impactor (PPI)	Respirable or Respirable or Thoracic	2 L/min 8 L/min 2 L/min	4.0 µm 4.0 µm 10 µm	Multi-purpose Calibration Jar	37-mm collection filter and 9.5-mm impaction substrate	Matches collection curve more closely than any other sampler 8 L/min PPI enhances sensitivity of respirable dust measurements
DPM Cassette	Sub-micron	1.7 L/min 2 L/min	< 1.0 µm	Multi-purpose Calibration Jar if used with GS-1 Cyclone	37 mm	Integral precision-jeweled impactor Low carbon background filters Tamper-evident seal
PEM Sampler	PM2.5 PM10 (thoracic)	2 L/min 4 L/min 10 L/min	2.5 µm or 10.0 µm	PEM Calibration cap	37 mm	Referenced in EPA Method IP-10A for particles in indoor air
Sioutas Cascade Impactor	Fractionates 2.5 µm & above 1.0 - 2.5 µm 0.5 - 1.0 µm 0.25 - 0.5 µm < 0.25 µm	9 L/min	>2.5 µm 2.5 µm 1.0 µm 0.5 µm 0.25 µm	None required	37-mm after filter and 25-mm collection substrate	Minimal particle bounce Sample coarse, fine, and ultrafine particles Chemical or gravimetric analysis
IMPACT Single-stage Impactor	PM2.5 or PM10 or PM Coarse	10 L/min 10 L/min 10 L/min	2.5 µm or 10 µm or 10 µm, 2.5 µm	IMPACT Cal Adapter	47-mm collection filter and 37-mm impaction substrate	Follows closely EPA reference methods and criteria Pre-oiled disposable impaction substrate
Personal Modular Impactor (PMI)	PM2.5 or PM10 or PM Coarse	3 L/min 3 L/min 3 L/min	2.5 µm or 10 µm or 10 µm, 2.5 µm	PMI Cal Adapter	37-mm collection filter and 25-mm impaction substrates	Pre-oiled disposable impaction substrates Suitable for thoracic TLVs^®or environmental PM parameters

About Particle Size-selective Sampling

The concept of size-selective sampling of industrial aerosols is based on the measurement of particles that are associated with a specific human health effect, i.e., how deeply particles penetrate into the respiratory tract. ACGIH recommends that particle-size selective threshold limit values (TLVs^®) be expressed in three forms:

Inhalable (100-µm 50% cut-point), hazardous when deposited anywhere in the respiratory tract
Thoracic (10-µm 50% cut-point), hazardous when deposited in the lung airways and the gas exchange regions
Respirable (4-µm 50% cut-point), hazardous when deposited in the gas exchange regions of the lungs

PM2.5 and PM10 sampling according to EPA regulations determines compliance with ambient air quality standards and reveals information on particle sources and their effect on the environment and public health.

This page was last modified February 28, 2011

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