Cascade Impactors

TSI’s suite of cascade impactors can collect particles with aerodynamic diameters (cutpoints) from 10 nm to 10 µm, in 3 to 13 different size fractions, and at flow rates of 2, 10, 30 or 100 L/min. The number of stages determines the size resolution of the collected samples, and consequently determines the level of detail of the data generated from the quantitative analysis of these collected samples. MOUDI II impactors have rotating stages. When the stage is rotated relative to the nozzle plate, the impacted particles are deposited in a more uniform manner across the impaction surface. This increases the amount of particle mass that can be collected, reduces the probability of particle bounce and re-entrainment, and optimizes quantitative analysis of the collected samples.

To learn more about TSI’s cascade impactors, take a look at individual offerings or contact a member of TSI’s team today.

Chose the Right Cascade Impactor for Your Application

TSI® offers the MOUDI™ series of cascade impactors, useful for a variety of applications. This selection guide compares the specifications of the impactors and help you define which one is right for your needs.

See Impactor Selection Guide

Interested in Abbreviated Impactor Measurements or Legacy Impactors?

Abbreviated Impactor Measurement (AIM) Equipment

Legacy Impactors

Real Time QCM MOUDI

Non-Rotating MOUDI Impactors

NGI and NGI Plus

MOUDI II Rotating Impactors

HFI High Flow Impactors