The 3321 Aerodynamic Particle Size Spectrometer (APS3321) is a high-performance, multi-purpose next-generation particle measurement instrument with a unique design that can simultaneously measure the following two properties:

Aerodynamic particle size: APS3321 can measure the aerodynamic particle size of particles in real-time through precise time-of-flight (TOF) technology, with a particle size measurement range of 0.5-20 μ m. Due to the fact that the aerodynamic particle size counting based on flight time is only related to particle shape, it avoids the interference of refractive index and meter scattering. Therefore, the instrument has better measurement performance for particle size than similar optical scattering instruments. In addition, the monotonic corresponding curve of time-of-flight particle size measurement ensures high resolution throughout the entire particle size measurement range.

Optical scattering intensity: Through optical scattering measurement technology, the measured particle size of APS3321 can reach 0.37-20 μ m. Although optical scattering intensity is not always a reliable characterization parameter for particle size, it is still an interesting parameter for people. APS3321 can provide data on the aerodynamic particle size and optical scattering intensity of the same particle separately and store them separately.