Recently, a new S.sangso branded KN95 (Stockroom #2650-052500) was made available in the stockroom. After obtaining additional documentation pertaining to the KN95 masks, they are considered suspect counterfeit. At this time, please discontinue their use and return any unopened packages to the stock room. Please continue to use the stock room medical masks (2650-051000). The lab is pursuing KN95 supplies.