The results are rated with grades from 1 (one) to 3 (three). If positive effects or no negative influence by the tested product on the above-mentioned aspects are shown in the examinations, the grade 1 will be awarded. If only a very weak negative influence is detectable in the tests, the grade 2 is awarded and, if the influence is clearly negative, the product receives the grade 3. The product has passed the test up to the mark of 2.0.
Petri dishes with bacteria mixture Grades stand for:
1 = Microbiome-friendly, 2 = Microbiome-neutral, 3 = Microbiome-damaging.