The patented (1) SKC Parallel Particle Impactor (PPI) has the power of 4 impactors in 1 small sampler to provide the closest match to the ACGIH/ISO/CEN thoracic or respirable curves.

PPI Reduces Effects of Particle Buildup and Bounce

Disposable pre-oiled porous plastic impaction substrates reduce the negative effects particle buildup and bounce can have on sample accuracy by firmly trapping larger particles. Unlike other samplers, SKC PPI sampling efficiency is not dependent on the type of particle collected.

PPI — How it works

The PPI contains four impactors arranged in parallel, each with a different cut-off size that targets a specific segment of the selected curve. A personal sample pump provides a 2 L/min flow to operate each impactor simultaneously, but independently. The sample collects on a single 37-mm filter and is analyzed gravimetrically to provide a respirable or thoracic result that is closer to the entire range of the selected curve than any other sampler available. PPI models are available for thoracic or respirable sampling at 2 L/min.

Technical specification

(1) U.S. Patent No. 7,073,402