What is the difference between P2 and N95 masks

P2 masks and N95 masks are both respiratory protective devices that are designed to filter out airborne particles, including those that may contain viruses and bacteria. These masks are widely used in healthcare settings and industries where workers may be exposed to hazardous airborne contaminants. While they serve similar purposes, there are some differences between P2 and N95 masks, primarily related to their certification standards and regional terminology:
P2 Masks:
Certification: P2 masks are certified to the Australian/New Zealand standard AS/NZS 1716:2012, which is equivalent to the European standard EN 149:2001. These standards specify the requirements for filtering half-facepiece respirators like P2 masks.
Filtration Efficiency: P2 masks are required to have a minimum filtration efficiency of 94% against airborne particles, including aerosols, dust, and microorganisms. They are designed to provide at least P2-level protection, which is roughly equivalent to N95 protection in the U.S.
Fit Testing: Just like N95 masks, P2 masks require proper fit testing to ensure an airtight seal. An improper fit can reduce their effectiveness.
N95 Masks:
Certification: N95 masks are certified by the National Institute for Occupational Safety and Health (NIOSH) in the United States. They are regulated by NIOSH under 42 CFR Part 84. N95 is not a specific NIOSH standard but rather a class of respirators that meet specific NIOSH criteria.
Filtration Efficiency: N95 masks must have a minimum filtration efficiency of 95% against airborne particles, including those measuring 0.3 microns in size. They are designed to provide N95-level protection, which is roughly equivalent to P2 protection in Australia and New Zealand.
Fit Testing: Proper fit testing is essential for N95 masks to ensure an airtight seal, just like with P2 masks.
It's important to note that while P2 and N95 masks have similar filtration efficiency requirements, they may have some variations in design, shape, and features. The specific mask you choose should meet the relevant standards and regulations in your region and should be suitable for the intended use and workplace hazards.
Additionally, the terminology and certification standards may differ in other parts of the world. For example, in Europe, you may encounter FFP2 masks, which are similar to P2 masks in terms of filtration efficiency.
When selecting a respirator, consider factors such as the certification, fit, comfort, and the specific contaminants you need protection against. Always follow local regulations and guidelines regarding respiratory protection in your area.