刚去网上找的 A surgical mask is used inside the operating room or within other sterile procedure areas to protect the patient environment from contamination. It also protects the clinician from contaminated fluid or debris generated during the procedure. Surgical masks have ties so that they can be adjusted for fit, and are tied over top of a surgical cap or a bouffant cap. A procedure mask is used for performing patient procedures, or when patients are in isolation to protect them from potential contaminants. Procedure masks are used to protect both patients and staff from the transfer of respiratory secretions, fluids or other debris. Procedure masks are used for generally "respiratory etiquette" to prevent clinicians, patients and visitors from spreading germs by talking, coughing, or sneezing. Procedure masks have ear loops for quick donning, and since they do not slide on the hair, they can be worn without a surgical cap.
盒子上有什么参数么？
我这里查了只有一家恐怖区域的cvs有。。不敢去买，怕口罩没买到还吃个枪子儿
procedure 和surgical都有level 3
我买的标了
问题是寄到北京能收到吗?
基本一回事。
Procedure带弹性得带子。Surgical需要系带子，便于医生真得手术时候用得。
防护效果看ASTM LEVEL。1-3 ， 95-99%得防护率，对液体压力的防护也略有不同。不过一般情况下都够用。
国内小区发的那种也差不多就这样了。
是三层 你在揉搓一下
圆锥形的有用吗 我也是只买到圆锥的
估计有是因为大家都不敢去。。
我也是只买到这种，有用吗？我看到他们写着surgical grade。但是没有具体bfe, pfe数据。