XRS level X5 · Breathing endurance
UNDER 1 HOUR
Under one hour: plan for breaks.
What it means for you
- Duration
Under one hour at a stretch.
- Effort you feel
Breathing takes a perceptible, continuous effort.
- Activity
Calm activities only, at rest or walking slowly.
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 140 and 200 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.