XRS level X3 · Breathing endurance
SEVERAL HOURS
Comfortable for several hours.
What it means for you
- Duration
Designed for several hours at a stretch.
- Effort you feel
You feel that you are breathing through a mask, without discomfort.
- Activity
Calm to moderate activities; under sustained effort, discomfort appears sooner.
What it does not tell you
The XRS level measures breathing comfort, not protection. To know what this mask filters, look at its protection class (for example FFP2, N95, KN95) and the manufacturer's instructions. An XRS level never replaces a safety instruction.
How it is measured
A laboratory measures the effort needed to draw air through the new mask. This level corresponds to a specific resistance between 60 and 100 Pa/(L·s⁻¹).
Verify this declaration
Every declared level is entered in a public register. If the number is not there, write to us.