how many times can you reuse a kn95 mask

/Some tips of medical and civilian face masks 1.Can the mask be washed and reused? Can’t! Masks are generally non-woven fabric + filter layer + non-woven fabric structure. The filter fiber in the middle must be kept dry to rely on the electrostatic adsorption capacity of filtration, so medical masks will be added with an impermeable layer, to prevent saliva or body fluid splash to protect the filter layer in the middle. Therefore, washing or spraying disinfectant, alcohol, or even heating will only destroy the protection of the mask, and the loss is outweighs the gain. 2.Can wearing more layers of masks protect you more? Wearing a mask is not about wearing several layers, the key is to wear the right! In fact, the instructions on the mask are very clear: “Press firmly on the nose clip to form a good fit.” This is very important. If you can’t get a good fit on your face, don’t enter the contaminated area. The most stringent is to wear a headband for a tightness test, and adjust it until the bitter smell is gone. If you wear a mask inside and then cover N95, the closeness is destroyed, the protection is equal to doing nothing, but also aggravate breathing difficulties. 3. About the classification of masks There are many kinds of masks. In terms of design, the wearer’s own protective ability is ranked (from highest to lowest) : N95 Mask > Surgical Mask > Common Disposable Mask > Common Cotton Mask. Experts point out that the most significant barrier to COVID-19 is disposable respirators and respirators that filter 95% or more of non-oily particles, such as N95, KN95, DS2, FFP2, etc. We ordinary people only need to wear an ordinary disposable protective mask to prevent the virus infection, but cotton masks have no protection. We urge everyone to leave N95 masks for the health care workers on the front line. Post time: Jul-06-2021