BVF dedicated HEPA filter material, BFE≥99.99%, VFE≥99.99%, produced in a clean environment, material has biocompatibility certification. This HEPA filter medium is specially engineered for BVF medical filters. It delivers outstanding filtration performance with BFE ≥99.99% and VFE ≥99.99%, effectively trapping bacteria, viruses and fine airborne particles. It provides trustworthy airway protection for patients during respiratory treatment. The filter material is manufactured