Choosing a supplied air respirator (SAR) can be a stressful task. Even if you pay top dollar and shop with a trusted supplier, there’s no guarantee the SAR you choose is best for your situation.

If air comes through, readjust the straps and try again. Supplied-air respirators: Follow the manufacturer's instructions regarding required airflow. Make sure no air can come in from the outside.

The Strategist’s mask expert breaks down the how N95, KN95, and KF94 masks are rated and tested based on the amount of bad stuff they block from entering your mouth and nose.