Filter Test - Don't Use Home-Made Face Masks Fact Check
He shows the spray test over Face mask with double filter paper, cloth mask, filter from a bag, single ply common filter, single ply filter cloth. In all the cases, the spray visibly passes through the masks. But in case of surgical mask (regulatory mask) and regulatory N95 mask, it does not pass through suggesting N95 and surgical masks spray mask filters barbados
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