Disinfection 03 Time to reduce by 90%

Time to reduce by 90%:

The Dezimalreduktionszeit is the time, in the 90% die of a population.

Is the time required, die in the nine-tenths of the population, the population is thus reduced to a tenth, as Dezimalreduktionszeit D (D value). This time is strongly dependent on the type or strain of the microorganism, depending on the disinfectant and other conditions, especially the water activity, the pH and ionic strength. The Dezimalreduktionszeit D under standardized conditions is reversed a measure of the resistance of a microorganism to the sterilization conditions.

Selection of the disinfectant.

The microorganisms have different properties. The disinfectants and disinfection procedures act on the microorganisms differently. Therefore, the knowledge of Dezimalreduktionszeit for selecting the disinfectant or disinfecting process is important.