3-ply mask is designed with a middle melt-blown layer that is critical as a filter to contain droplets by electrostatically adsorbing them on the surface hence it cannot infiltrate the mask; while the inner layer is intended to absorb water, sweat and spit
An infrared thermometer is a thermometer which infers temperature from a portion of the thermal radiation sometimes called black-body radiation emitted by the object being measured.
The KN95 Respirator Mask is worn to protect the wearer from viruses, bacteria, pollen, other particles and has a bacteria filtration efficiency.