MSP100-110-115-116-d-MOUDI and NanoMoudi

10階微孔均勻沉降衝擊器(110_MOUDI)8階微孔均勻沉降衝擊器moudi 100-NR
High accuracy cascade impactors for collecting size-fractionated aerosol particle samples for gravimetric and/or chemical analysis:
  • 30-L/min sampling flow rate
  • Sharp cut-size characteristics
  • Up to 2000 micro-orifice nozzles to reduce jet velocity & pressure drop
  • Rotating stage to obtain uniform particle deposit and reduce particle bounce and reentrainment

DESCRIPTION

These precision cascade impactors are designed for sampling and collecting size-fractionated aerosol particle samples for gravimetric and/or chemical analyses. The Models 100-R and 110-R Micro-Orifice Uniform Deposit Impactors (MOUDI™) both have a sampling flow rate of 30 L/min and are provided with an 18μm inlet cut-point stage followed by additional stages to size-fractionate aerosol particle samples. The 8-stage Model 100-R has a lower cut-size of 0.18μm while the 10-stage Model 110-R has a lower cut-size of 0.056 μm.

The MOUDI differs from other, conventional cascade impactors in the use of a large number of micro-orifice nozzles to reduce jet velocity and pressure drop, minimize particle bounce and reentrainment, and enhance collection efficiency. As many as 2,000 nozzles with diameters as small as 50 μm are used. These impactors also have the uniform-deposit feature achieved by rotating the impaction plate relative to the nozzles so that the particle deposit under the nozzles can be spread out uniformly over a 25 mm diameter impaction area on a 37mm or 47mm sampling substrate. The uniform deposit feature prevents heavy particle buildup under the nozzles to minimize bounce and re-entrainment. The mass of particles that can be collected without overloading can thus be greatly increased. Both the Models 100 and 110 are also available in non-rotating versions, Models 100-NR and 110-NR, with fixed nozzle and collection plates.
產品所屬分類: 
MSP採樣器MOUDIMOUDI