Face Shield

 There is presently not ample proof to support the effectiveness of face shields for supply management. so as to gauge the comparative barrier performance impact of face masks and face shields , we have a tendency to use an Associate in Nursing aerosol generator and a particle counter to gauge the performance of the varied devices incomparable things. we have a tendency to tested completely different configurations in Associate in Nursing experimental setup with manikin heads sporting masks (the surgical sort I), face shields (22.5 cm high with overhang below the chin of seven cm Associate in Nursingd circumference of thirty-five cm) on an electrode or a receiver manikin head, or both. The manikins were face to face, twenty-five cm apart, with Associate in Nursing intense particle emission (52.5 L/min) for thirty s. The particle counter calculated the overall additive particles aspirated on a volume of one.416 L In our experimental conditions, once the receiver alone wore protection,