Aerosol d.o.o., based in Ljubljana, Slovenia, develops and manufactures scientific instrumentation for monitoring carbonaceous aerosols in air. Since 2007 we manufacture Aethalometer®, most widely used instrument for monitoring black carbon aerosols in air and more recently we also started with manufacturing of  instrumentation for monitoring other types of carbonaceous aerosols. The company employs more than 20 people including 6 with PhDs. Aerosol d.o.o. has its own research group and is therefore either a partner or coordinator of many research and development projects (both national, bilateral and European base), through which it collaborates with many leading world scientists from the filed of carbonaceous aerosols. Results gathered through such scientific collaborations are in the vast majority also implemented in our products.