The Wide Range Aerosol Particle Spectrometer is manufactured by Korean company HCT.This is an instrument combining laser scattering, electrical mobility (DMA) and CPC technologies. It measures particle concentration and particle size distribution from 15 nm to 10 µm.

·Atmospheric Environment Monitoring. ·Indoor air quality monitoring. Particle contamination monitoring of office etc. Particle size distributions during the printer usage. ·Emission source particles. By-products of burn-wet scrubber in semiconductor. ·Semiconductor, computer disk drive, micro-contamination. Metrology and cleaning technology development during slider fabrication process. Particle deposition and detection on slider. Cleaning tray design and advanced cleaning development. Particle sampling and analysis during HDD operation and particle-robust air bearing design.