Three questions to Dr. Andreas Dreusch, managing director of the renowned MicroMol research and development laboratory
Since 1996 MicroMol GmbH has worked – and continues to work – on a number of complex issues relating to the development, evaluation and validation of cleaning agents and disinfectants and cleaning and disinfection processes. In biological systems especially the use of tensides and a knowledge of their chemistry is very widespread and important. MicroMol GmbH is also accredited by the German Accreditation Agency (DAkkS) for a number of test procedures. MicroMol’s Dr. Andreas Dreusch is an auditor appointed by the German Accreditation Agency for the areas of biology and chemistry and therefore inspects other laboratories or public bodies to ensure that their work complies with the standards.
Dr. Dreusch, you can clean quite well using water alone, can’t you?
You can clean very well with normal tap water. However, water is no good for fatty dirt. And that is increasingly widespread. A carton of milk bursts in the supermarket, a sandwich is dropped at a fast-food outlet, in a shopping mall for example, factories have oil and grease stains from machines, and soot. And fat particles are present everywhere where there are a lot of people, such as schools, kindergartens or hospitals.
In other words, to get a surface contaminated with fat or oil really clean, you need to add cleaning agents?
Of course, you can also strengthen the mechanical component when cleaning, by brushing harder or longer. Or you can try to clean with hot water. That won’t work particularly well, but it will make the floor surface look clean. However, in many cases hygienic, reliable cleaning is only possible with the use of cleaning agents that dissolve fats so that they are picked up rather than being spread evenly across the floor.
How clean do scrubber-driers that use ec-H2O technology really clean?
We have examined this technology thoroughly in our laboratory and found that it is possible to achieve good results with these machines. However, the results are just as good as those achieved using normal water. In the case of fatty, that is water-repellent, dirt, we were able to prove clearly that particles are distributed, but not dissolved or removed. The cleaning result was definitely worse than that of machines that use cleaning agents.