“It’s the small things that count.” Airmodus Condensation Particle Counters are designed to count individual aerosol particles accurately from very low to high concentrations. They are ideal for ambient air monitoring as well as aerosol research. The A20 is a robust and reliable tool for aerosol particle measurements in all applications where precision and sensitivity is of the essence. It is a user-friendly tool for counting aerosol particles larger than 5 nm (by request A20 can be delivered with a cut-off between 5 – 10 nm, e.g. for ambient measurements 7 nm). A versatile particle counter The A20 can be used both as a stand-alone instrument for measuring the total particle number concentration, and as a counter in different kinds of aerosol measurement systems. It is easy to use and handle. All settings can be quickly adjusted from a handy touch screen, which also displays the current concentration reading and instrument diagnostics. The A20 is also compatible with the Airmodus Particle Size Magnifier A10. Use the A10 when you want to study particles as small as 1 nm! Benefits of the A20 - High statistics for low concentrations: the instrument is specially designed for precise particle counting and the sample flow is not diluted High accuracy for high concentrations: up to 30 000#/cm3 in single particle counting mode, for higher concentrations the Total Scattering Mode Correction is automatically applied In addition to the easy to use touch screen, adjusting the settings and data logging is easy. User-friendly operation software is delivered with the instrument All connections optimized for easy access Airmodus Ltd. Erik Palménin aukio 1 00560 Helsinki, Finland FI23103192 +358 50 5666043 www.airmodus.com [email protected] [email protected]

Particle size range 0 – 100 000 #/cm3 Up to 30 000 #/cm3 in single particle counting mode with coincidence <10%; higher concentrations with Total Scattering Mode Correction Aerosol sample flow Nominal flow 1 lpm, controlled with a critical orifice Response time False counts Working fluid Saturator: 39oC Condenser: 15oC Optics: 40oC Sample conditions Pressure: 75 to 105 kPa Relative humidity: 0 to 95% non-condensing (preferably <40%)*** Environmental conditions Temperature: 15oC to 35oC Pressure: 75 to 105 kPa Relative humidity: 0 to 95% non-condensing Analog in: BNC connector, 0 to 10 V (reading...