The outer layer of mask often accumulates a lot of dirt in the outside air, bacterium waits for dirt, and the inside layer is blocking the bacterium that exhales, saliva, accordingly, two sides cannot use alternately, otherwise can the dirt that the outer layer is contaminated is inhaled human body when clingy face directly, and become contagion source.When the mask is not worn, it should be folded and put into a clean envelope. The mask should be folded close to the mouth and nose.
If the mask is moistened by exhaled heat or saliva, its blocking effect will be greatly reduced.So, usually had better have a few more masks, in order to replace the use, should be washed once a day.Wash with boiling water should be hot for 5 minutes.
Masks should be cleaned and disinfected daily. Both gauze masks and air filtration masks can be disinfected by heating.The specific approach is:
1. Cleaning.Rub gauze mask gently with warm water and soap first, the bowl-shaped mask can be dipped in detergent with a soft brush gently brush, and then clean with clean water.Please be careful not to rub vigorously, because if the gap between the warp and weft of the gauze is too large, it will lose the function of preventing droplets.
2. Disinfection.Soak the clean mask in a 2% solution of peracetic acid for 30 minutes or boil it in boiling water for 20 minutes or steam it in a steamer for 15 minutes and let dry.This method is suitable for gauze masks and bowl-shaped masks.
3. Check.Before using again, should carefully check whether the mask and mask are still in good condition, for gauze mask and mask can take light transmittance test method, that is, take the lamp in front of the care, see if there is a clear spot, the middle part and the edge part of the light transmittance is consistent, if in doubt to replace the new.In any case, masks and masks are generally updated after three to seven washes, and masks of particularly good quality can be cleaned up to 10.Activated carbon adsorption mask should be paid attention to regularly replace the activated carbon sandwich, if the activated carbon sandwich is not replaceable, used for 7 to 14 days will be replaced, this mask can not be cleaned after re-use.