For example the Munster Article – The study described in this article is clearly invalid from a scientific point of view. While all studies on disinfection systems, notably on ultrasound probes, are done with quantitative microbiological analysis methods, the discussed study used a qualitative method , which is often done in pharmaceutical research, but is invalid for the evaluation of semi-critical medical devices.
The discussed study finds more contamination after disinfection than before disinfection. This alone shows that the study design was inappropriate and did not have scientific value: “In some cases in our study, bacteria was found in the second swab taken after disinfection, which we had not found in the first swab taken before disinfection including 19 in the Antigermix group and 7 in the wipes group (12 % and 4.4 %).”