Types of disinfection processes examined in the microbiological S2 laboratory:
The medical instruments / devices to be tested are inoculated with a defined amount of bacterial suspension. After visual drought, the instruments or devices are subjected to the disinfection process (wiping or immersion disinfection).
Subsequently, the contaminated site is examined for presence of viable microorganisms using a suitable recovery process. In parallel, a non-disinfected reference (positive control, inoculated but not disinfected) and a negative control (not inoculated but cleaned and disinfected) are included.
The disinfection process (high or low level disinfection) is considered successful if a reduction of the number of viable microorganism by six log steps is detected for all microorganisms tested..
Standards and guidelines: