Data underlying the research on influence of face velocity and exhaled breath condensate on the filtration efficiency of masks and mask materials for COVID-19 transmission prevention

In this research, the filtration capability of 15 types of masks and filter materials usable as insert in masks were tested at two different face velocities (10 and 25 cm/s). Four of these masks were tested at two additional face velocities (17.5 and 32.5 cm/s): level 3 surgical masks, two designs of cotton masks and disposable non-medical masks. Seven of these masks were also exposed to aerated simulated exhaled breath condensate (EBC) for 1 to 24 hours and their filtration efficiency was tested immediately following exposure.本研究针对15种口罩及可作为口罩内置过滤层的过滤材料，在10 cm/s、25 cm/s两种不同面风速下开展了过滤性能测试。其中4种受试口罩（三级医用外科口罩、两款棉质口罩及一次性非医用口罩），额外在17.5 cm/s、32.5 cm/s两种面风速下进行了测试。另有7种口罩经曝气模拟呼出气冷凝液（EBC）暴露处理1至24小时后，立即对其过滤效率进行了测试。