6-LOG killing rate, effective killing, mathematically speaking, 6lg is the sixth power of 10, that is, 1000000, or one millionth of a millionth. It is a concept of probability. From our sterilization filter, it will be three logs, one thousandth. Achieving this is considered bactericidal filtration. Compared with the above, the safety of sterilization filtration is certainly much less than that of sterilization.