EN 14683 Differential Pressure (Breathability/ΔP)
- Measures the airflow resistance/differential pressure/breathability of materials used in medical facemasks.
- Air flow: 8 liters per minute.
- Test area: circular; 2.5 cm diameter.
- Manometer used to measure the differential pressure across sample.
- Five measurements per mask are averaged.
- Performance Levels:
- Level 1 < 5.0 mm H2O/cm²
- Level 2/3 < 6.0 mm H2O/cm²