Mask generally refers to wear in the mouth and nose position used to filter the air, in order to prevent harmful gases, smells, droplets in and out of the wearer's mouth and nose appliances, more cloth or paper.Masks can be divided into air filter masks and air supply masks.The outer layer of the mask often accumulates a lot of dust, bacteria and other dirt in the outside air, usually a lot of masks, in order to replace the use, should be washed once a day.What are the standards and ranges in the detection of commonly used masks?
Regulations In the United States, standards and guidelines have been set such as:
ANSI. The American National Standards Institute (ANSI) Practice for Occupational and Educational Eye and Face Protection ANSI Z87.1 1989 states: "These guidelines establish reasonable and adequate means, ways and methods for the testing, selection and safe use of face and eye protective equipment."
AORN. The Association of periOperative Registered Nurses (AORN) AORN states that surgical masks should be worn at all times in the operating room and in environments where open sterile supplies or scrubbed personnel may be located. Masks should be secured in a manner to prevent venting. Recommendations include single use of surgical masks.
It is also recommended that a surgical mask be used as a barrier to meet Centers for Disease Control and Prevention (CDC) Standard Precautions. (Note: AORN does not specify filtration levels of surgical masks. Individual practice settings should develop their policies based upon OSHA and state-mandated recommendations for wearing masks.)
ASTM. The American Society of Testing and Materials (ASTM) is a nonprofit organization that develops standard testing methods by the consensus of volunteers from manufacturers, users, and others.
