TSI Incorporated products

Models 128, 129, 130 and 131 are High Flow Impactors (HFI) ideal for sampling particles at low concentrations (pristine environments), for collecting more mass per stage as compared with conventional MOUDI™ impactors, or for obtaining samples in shorter sampling intervals. HFI impactors are available with 3, 4, 5 or 6 stages in the 0.25 to 10 µm aerodynamic size range. Particle deposits are collected on 75-mm substrates which can be analyzed for mass, or via chemical analysis or microscopy.

MOUDI-II and NanoMOUDI-II impactors are second generation Micro-Orifice, Uniform-Deposit Impactors from MSP. These impactors are noted for their superior aerodynamic design, sharp cut-size, and low particle loss characteristics. Up to 6000 precision micro-orifice nozzles are used to reduce pressure drop, jet velocity, particle bounce, and re-entrainment.

MOUDI impactors are classic, precise cascade impactors with sharp cut-size, low internal-loss characteristics, and high accuracy. These cascade impactors provide sharp cut-sizes, low internal losses, and high accuracy in a non-rotating configuration with a 30 L/min smapling flow rate. The MOUDI impactors, 100NR, 100S4, and 110NR, are used for collecting size-fractionated particle samples in the 0.056 to 10 µm aerodynamic diameter range for gravimetric and/or chemical analyses. The various MOUDI models hold various number of stages, as listed in the table below, the classic MOUDI`s hold various impaction stages and cut-sizes. Particle deposits are collected on standard 47-mm substrates which can be analyzed for mass, or via chemical analysis or microscopy.