Demand for masks has soared due to the outbreak of pneumonia. Due to the Spring Festival holiday and other factors, the supply of masks can not meet the demand. At present, it is difficult to sell masks. kf94 masks have been found in South Korea. Can this mask protect against COVID-19? How much is it each?
kf94, a Korean standard, refers to a mask that filters out more than 94 percent of particulate matter with an average diameter of 0.4μm, little different from the U.S. standard N95 mask. It is found that kf94 has one more oily particle filtration requirement than n95. However, it should be noted that the medical series of kf94 has the best effect, while the non-medical series does not require bacterial filtration efficiency and blowout prevention ability.
In terms of price, through overseas website information found that the price of kf94 masks is nearly 70 dollars 120, the average down is 4 yuan. The N95 mask is a little more expensive. But if international shipping is included, kf94 masks are more expensive. In the use of time, are one-time, we must pay attention to.
