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How to wear mask to protect from Corona 19

Corona 19 does not show signs of ending the spread. If he can be caught, he will look up again and finally calm down, and another unexpected spot is coming out. Infectious disease experts say that the development of vaccines will be the ultimate solution. Until then, wearing a mask seems to be a part of our lives.

As summer approaches, however, one new problem is emerging. When the weather gets…

KF94是韩国卫生口罩的等级之一。韩国口罩必须获得韩国食品药品监督管理局（KFDA）的认证，视其性能而定，其等级为KF80 / 94/99。数字量化了面罩的过滤性能。

KF80/94/99编号越高，阻塞率越高。 例如，KF80阻挡了0.6μm的平均粒径的80％以上，而KF94阻挡了0.4μm的平均粒径的94％以上。 请注意，佩戴KF等级较高的口罩可能会呼吸困难。 通常，购买KF认证的口罩的价格在1.00美元至3.00美元之间。 KF认证仅保证口罩过滤器，因此，即使过滤器性能没有问题，某些价格太便宜的产品也不会使人脸部不适。 某些面罩的购买价格超过2.00美元，还配备了可调节带子，可与面部保持良好的接触。

经KF认证的口罩基本上设计成主要在多尘的地方佩戴。因此，请确保根据您的情况和目的选择合适的产品。另一方面，请务必记住，过滤器可能会因化学物质/油类而降解。重要的是要注意，如果使用不当，K…

3 Tips for Wearing a Mask to Stop the Corona Virus

1. Not necessarily have to choose an expensive mask.

If you are financially burdened to buy a KF94 mask, a cheap and breathable KF80 mask is sufficient. The most important purpose of wearing a mask is to reduce the amount and velocity of saliva that protrudes when splashing. In order to prevent the spread of the virus it is important to filter out the droplets rather than the virus particles…