Purpose Disinfection check:
Check the effectiveness of the disinfection.
Definition Disinfection check:
Disinfection: killing micro-organisms with the help of a disinfection solution.
Frequency: See specification /overview.
A good disinfection is very important to prevent the accumulation of micro-organisms. It also prevents the possibility of cross contamination. Through proper disinfection, the micro-organisms are killed. The following can be done yourself or (partially) outsourced.
- Make an petri dish of the object to be assessed.
- Make sure the agar is not touched. This causes contamination and gives a wrong result.
- Clearly label the petri dish.
- Incubate the petri dish according to specifications.
- Assess the petri dish.
- Record the results.
Assess petri dish:
Normally the results are sorted by a classification:
|4||90 and higher||Very poor|
Because we only view 0 and 1 as good, we have chosen to use the following classification:
|0||10 and more||Poor|
Actions by abnormalities:
When a 0 is scored, a resampling should be performed within 1 week to assess whether it is a structural abnormality or an incident. If the resampling is still poor:
- The cause must be determined, for example:
o Incorrect instructions.
- The cleaning execution should be checked.
- The personnel should be instructed regarding cleaning and disinfection.
- After instruction, a new sampling should take place.
- If more than 50% of the items (total) scores a 0 for the first sample and resampling, the supplier of the disinfectants must be contacted. This is to prevent microbiological resistance.
- Record all measures taken.
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