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款口罩及可作为口罩内衬使用的过滤材料，在两种不同的面风速（10 cm/s与25 cm/s）下开展了过滤性能测试。其中4款口罩额外在17.5 cm/s和32.5 cm/s两种面风速下完成测试，分别为三级外科口罩、两款棉质口罩以及一次性非医用口罩。另有7款口罩还在充气模拟呼出气冷凝液（EBC）中分别暴露1至24小时，并于暴露后即刻测试其过滤效率。