In the Chemistry department of Kufstein, the lead chemist Aldo von Passau had just made a significant discovery. Something that Berengar had previously hinted to but in no way explained in detail. Upon discovering such a thing, the man began to question how Berengar could know this reality. He was starting to believe that God sent Berengar to lead humanity into a new golden age.
This significant discovery was basic Germ Theory. As part of Berengar's chemistry department, which the young Duke had spent a considerable sum to construct, microscopes were included within the facility's tools. In Berengar's past life, he was an engineer, not a biologist, or a chemist.
However, to graduate from university, he had to have a fundamental knowledge of these subjects. Because of this, he had taught the men in his current chemistry department the basic level of knowledge that pertained to chemistry.