The Condensation Particle Counter (TSI model 3772) was installed at ICO-OV in March 2008, calibrated from TSI Laboratories. Once per year the instrument is used for a multi-ay intercomparison with the CPC running at the "Nepal Climate Observatory - Pyramid" GAW global station.
Aerosol number concentration are continuously recorded at the ICO-OV from March 2008 by using a Condensation Particle Counter (TSI model 3772).