The Aerodynamic Particle Sizer® (APS™) 3321 spectrometer provides high-resolution, real-time aerodynamic measurements of particles from 0.5 to 20 microns. These unique particle sizers also measure light-scattering intensity in the equivalent optical size range of 0.37 to 20 microns. By providing paired data for each particle, the APS spectrometer opens up exciting new possibilities for those interested in studying the makeup of an aerosol.The APS spectrometer uses a patented, double-crest optical system for unmatched sizing accuracy. It also includes a redesigned nozzle configuration and improved signal processing. The result is greater small-particle sizing efficiency, improved accuracy of mass-weighted distributions, and virtual elimination of false background counts.Applications:Inhalation toxicologyDrug delivery studiesAtmospheric studiesAmbient air monitoringIndoor air-quality testingFilter and air-cleaner testingTest-aerosol characterizationPowder sizingIncluded Items:Aerosol Instrument Manager® softwareFeatures and benefits:Double-crest optics produce high-quality measurementsMeasures light-scattering intensity from 0.37 to 20 µmMeasures aerodynamic particle size from 0.5 to 20 µmTechnical Specifications / Characteristics:Model Number: 3321Particle size range (aerodynamic): 0.5 to 20 µmParticle size range (optical): 0.37 to 20 µmHigh size resolutionOne-second samplingReal-time size distributionsTime-of-flight aerodynamic sizingPatented double-crest optical systemRedesigned nozzle configurationImproved signal processing