Description Disposable respirators, are subject to various regulatory standards around the world. During pandemic or emergency situations, health authorities often reference these standards when making respirator recommendations, stating, for example, that certain populations should use an “N95, FFP2, or equivalent” respirator. – Australia’s P2 standard, – Korean KF94 standard, – USA’s N95 Niosh standard, Respirators certified as meeting any of these standards can be expected to function very similarly to one another. You are buying certified KF94 Fish Style Masks. The KF94 specifies that respirators filter performance is ≥ 94%. Please see the comparison table by clicking here. This face mask meets Korean KF94 standard for respirators. KF94 standard certified products are designed to protect against solids, water-based aerosols, and oil-based aerosols.