The filter must be replaced before it reaches its maximum usage as it may no longer be effective against particle filtration. Used filters should be thrown away in general household waste. After disposal wash hands with soap and water or an alcohol-based hand gel. Do not exceed 40 hours usage before replacing the filter.
Varified test report and certificate below.
These filters do not guarantee immunity against viral diseases as there are many ways for these to be contracted, however the Antibacterial AB Mask may help reduce viral transmission, bacterial load on the mask and reduce the impact on the environment.