Aerosol Messgeraete

Universal Air Sampler
This Universal Air Sampler is an  air sampler for airborne particles in general. Air is sampled at 300 lpm (10.6 cubic feet per minute) from the ambient through an omni-directional, cylindrical inlet. Particles > 10µm are first separated from the airstream by a 10 µm cut virtual impactor classifier and discarded. Smaller particles then enter the 2.5µm cut virtual impactor.

Particles in the 2.5 - 10 µm range are collected on a 62 x 165 mm filter and those < 2,5 µm are collected on a 200 x 250 mm filter. A holder located downstream of the final filter is provided so that a standard PUF sampler can be used to collect volatile organic compounds (VOC).
In addition, one or more high performance, compact diffusion denuders can be inserted between the PM2.5 classifier and the final filter to separate gaseous pollutants as SO₂, NO₂, NH, etc., from aerosol particles.