FAQ

DILUTER – FAQ 

If you can not find the answer in the FAQ section or need more information, please contact support@dekati.fi or your local distributor.

1. How can I find out the right dilution ratio for my application?

The optimal dilution ratio depends on the raw sample concentration and the measurement range of the measurement instrument. The Dekati® diluter is provided with a dilution ratio of 1:8 (1:64 for two diluters), which is suitable for most combustion and exhaust studies.

2. When is heated two-stage dilution needed?

The two-stage dilution is needed is the sample is hot and contains vapour compounds (such as water, VOCs or sulphur), which is normally the case with combustion aerosols. The first diluter is in the sample temperature, the second diluter is in room temperature. In the first dilution stage, the dilution is made in high temperature. This way the concentration or the particles is lowered and also the concentration of the vapour compounds is lowered enough so that the second diluter can be in room temperature without a fear of condensation or nucleation of vapour compounds.

The nominal dilution ratio of Dekati® diluter is 1:8. The exact dilution ratio can be found from the data sheet provided with the diluter. If custom dilution ratio is needed, please consult your local distributor for availability.

4. What is the maximum sample temperature to the diluter?