Dekati® Oxidation Flow Reactor, DOFR™, is a unique, all-in-one solution combining sample conditioning and an oxidation flow reactor for secondary aerosol (SA) formation studies. The formation of secondary aerosols can take several days in the atmosphere and the purpose of the oxidation flow reactor is to speed up these processes. In the Dekati® DOFR™, UVC radiation together with water molecules and ozone in the sample create highly oxidative conditions inside the reactor and the time- scale is reduced from days to less than one minute.
In the Dekati® DOFR™, all parameters – humidity, ozone, UVC-intensity, dilution and reactor flow – are controlled and monitored with a user-friendly PC software. The flow through the oxidation chamber is kept constant and laminar, resulting in minimal particle losses. Together with wide oxidation range, these features make the DOFR™ an ideal tool for any secondary aerosol studies from stationary lab tests to transient emission sources.
When combined with Dekati sampling solutions such as the eDiluter™ Pro, DOFR™ can take the sample even from the harshest conditions. After the photo-chemical aging in the Dekati® DOFR™, the size, concentration and mass of the aerosol can be monitored with particle measurement instruments. For example, the Dekati® ELPI®+ (Electrical Low Pressure Impactor) is well suited for monitoring the particle size distribution and concentration in real time.