Comparison of International Disposable Respirator Standards

Disposable respirators are required to meet different standards around the world. Each standard has different requirements that the product must pass before being able to claim compliance. This document compares standards in Australia/New Zealand, United States and China for what Australians refer to as "P2 respirators".

Based on the results below, P2, N95 and KN95 respirators can be considered “equivalent” in the filtration of particles such as bushfire smoke, PM 2.5 air pollution and bio aerosols/viruses. However, ATOM Safety recommend that you check with your local public health authority for selection guidance and read user instructions before using any respirators.


Total Inward Leakage (TIL) – Measures the amount of the test agent that enters the respirator via both filter penetration and face seal leakage, while a wearer performs a series of exercises in a test chamber.

Inward Leakage (IL) – Measures the amount of the test agent that enters the respirator while a wearer breathes normally for 3 minutes in a test chamber. The test agent size (count median diameter) is about 0.5 micro meter. Pressure Drop – The resistance air is subjected to as it moves through a medium, such as a respirator filter.

If you're unsure about your respiratory requirements, contact the team at ATOM Safety for expert knowledge and assistance.

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