Re-usable Face Mask with Filter

Description:

Face Mask is Polycotton with non-woven backing , has pocket for Filte r. Hand wash face mask and reuse. Adjustable nose wire. Adjustable elastic can go around ears or head for comfort. Disposable Filt er has excellent results for filtration against airborne bacteria, dust, pollen, and viruses. ​ C olours: Beige, Navy, Black, Jade Green , Grey
Technical Information on the Filter: Particle Filtration Efficiency (PFE) according to ASTM F2299 The PFE tests filtration efficiency of filter media by challenging the filter with latex particles, performed by Nelson Labs USA. The latex particles generated are in the sub-micron size range and can simulate particles and viruses that are 0.1 micrometres in diameter. The 0.5gsm Nanofibre between two layers of polypropylene achieved 98.6% efficiency of 0.1um latex particles Bacterial Filtration Efficiency (BFE) according to ASTM F2101 ​ The BFE test shows the filtration efficiency of filter media by challenging the filter with a known dosage of Staphylococcus aureus, in an aerosol at ~ 2,200 colony forming units (CFU) with a mean particle size of 3.0um. It was performed by Nelson Labs, USA. It is performed on filtration materials and devices that are usually designed to provide protection against biological aerosols, such as face masks, surgical gowns, caps and air filters. The 0.5gsm nanofibre mask between two layers of polypropylene achieved 99.68% efficiency (99% protection.