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A specimen medical mask is supported on an apparatus. A volume of engineered blood is showered on a level plane at the example cover to reenact the situation of a mask being sprinkled by a punctured vessel. the amount of liquid, separation to affect, hole size and liquid speed are characterized during this technique and expected to be as ...【Get Price】 medical masks

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Standards for Medical Face Masks and Protective Clothing ...

It will also show the mask’s ability to prevent aerosols from the wearer's mouth from reaching the environment. The bacteria used is Staphylococcus aureus, which is attached to liquid droplets with sizes ranging from 0.65–9 microns and above with 3 microns as the mean particle size. A filtration efficiency is then reported: This is the ratio of the amount of bacterial aerosols challenging the mask versus the …【Get Price】

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