Figure 6.

Comparison of inactivation efficiency (IE) of SOP (solid oxygen-purifying) between the commercially available surgical face mask (A), HEPA filters (B) and soaking with high viral loading (C). Both A and B used aerosol transmissions which was attached on the surface of face mask, HEPA and SOP Filters, while C used a microtube filled with (1000 µL) MS2 bacteriophages, where a 1 × 1 cm diameter of SOP filter was soaked. Only the data with the same time interval (30 minute) were being compared.