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KN95 Medical Face Masks

How To Choose FFP2, KN95, And N95 Masks

Filtering facepiece respirators (FFR), which are sometimes called disposable respirators, are subject to various regulatory standards around the world. These standards specify specific required physical properties and performance characteristics for respirators to claim compliance with the particular rule. During pandemic or emergencies, health authorities often reference these standards when making respirator recommendations, stating, for example, that specific population should use an “N95, FFP2, or equivalent” respirator. This document is only intended to help clarify some key similarities between such references, specifically to...

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