UV-C is one of three sorts of ultraviolet light. The one with the shortest wavelenght, between 200-280 nm. It has germicidal effect, which means it kills 99,9% of pathogens (bacteria, virus etc) on surfaces and...

How dirty is my toothbrush? Scientists show that a normal toothbrush is the home of millions of bacterias and viruses. This can be flu virus, staph bacteria, E. coli, yeast fungus and strep virus. The...