All Apothecare Rx's KN95 masks are GB 2 626-2006 certified and have a 100% satisfaction Guarantee. KN95 Face Masks For Sale. Protective PPE face masks for filtering particulate, viruses, and microbes. KN95 Masks filtrate 95% a 0.3 micron. 10 masks per order. According to the CDC, KN95 are suitable alternatives to N95 masks in various healthcare fields including dentistry.