Non-Rotating MOUDI™ Impactors

The Mini MOUDI™ Impactor is a precision, high-accuracy impactor with a 2.0 L/min sampling flow rate and a small physical size. The Mini MOUDI™ Impactor is available with 6, 8, and 10 impaction stages, to provide size-fractionated particle samples as small as 56 nm (same as the classic MOUDI™ impactors). 

The MOUDI™ Impactor Model 100S4 is a compact, non-rotating cascade impactor designed for high-quality aerosol sampling in environmental, industrial, and occupational health applications. Operating at a flow rate of 30 L/min, the 100S4 provides precise size-segregated particle collection with nominal cut points at 10 µm, 2.5 µm, and 1.0 µm, making it ideal for PM monitoring and exposure assessment studies. Designed for researchers who require reliable particle size fractionation without the complexity of high-stage cascade impactors, the 100S4 delivers sharp cut-size performance, low internal losses, and easy sample handling. Particle deposits are collected on standard 47-mm substrates for gravimetric analysis, chemical characterization, or microscopic examination.

The MOUDI™ Impactor Model 110NR is a high-resolution cascade impactor designed for researchers requiring detailed size-segregated particle sampling across a broad aerodynamic diameter range. Operating at 30 L/min, the 110NR provides ten stages of particle classification with nominal cut points from 10 µm down to 0.056 µm, enabling comprehensive characterization of fine and ultrafine aerosols. Utilizing advanced micro-orifice technology, the 110NR extends particle sizing into the ultrafine range while maintaining excellent cut-size sharpness and minimizing internal particle losses. This capability makes it particularly valuable for atmospheric research, source apportionment studies, emissions characterization, and health-related aerosol investigations.