Captures up to 99.9% of viruses similar in size to H1N1 and certain coronaviruses. Reduces household and pet odours and volatile organic compounds (FOVs) such as formaldehyde and benzene. Compatible with the Braun Scan <(>&<)> Clean BFD104BE air purifier. Braun's home and office air purifier design features smart technology that provides effortless and easy clean air. One... package contains one filter.