The air permeability of filters is determined in accordance with the DIN EN ISO 9237 standard. A flat material sample is clamped into the test device and the air flow is set to a specified differential pressure. The flow velocity is measured.
The air permeability of filters is determined in accordance with the DIN EN ISO 9237 standard. A flat material sample is clamped into the test device and the air flow is set to a specified differential pressure. The flow velocity is measured.