This test is performed on filtration materials that are designed to provide protection against biological aerosols, such as face masks, surgical gowns, caps, and air filters.
The test evaluates the resistance of a mask to penetration by a small volume (~2 mL) of synthetic blood at a high velocity (80 mmHg, 120 mmHg, or 160 mmHg). The mask either passes or fails based on visual evidence of synthetic blood penetration.