Comparison of different international FFR standards
| Country | Mask standards | Filter efficiency | Sodium chloride aerosol tested | Paraffin oil aerosol tested | Respirator standard on passing |
| Australia and New Zealand | AS/NZS 1716 | 94% | ✓ | ✕ | P2 |
| USA | NIOSH | 95% | ✓ | ✕ | N95 |
| Europe | EN | 94% | ✓ | ✓ | FFP2 |
AS/NZS, Standards Australia and Standards New Zealand; FFR, filtering facepiece respirator; NIOSH, National Institute for Occupational Safety and Health.