Fresh air is like food for people
Anyone who has ever had an aquarium knows that the health of the fish depends crucially on the quality of the water. What is easy to understand but not conscious to many people is that for us, the surrounding air is of similar great importance - bad air makes us sick. (Der Spiegel, October 2010).

Fresh air is like food for people. In a natural environment, both the proportion of oxygen and the number of positive and negative oxygen ions remain stable. In modern cities, this balanced situation has been disrupted due to industry and vehicle exhaust. In addition to indicators such as air temperature and humidity, above all, the ion content in the room is a decisive factor for good and healthy indoor air.






