An ASTM Level 2 4-ply disposable black surgical face mask is a type of mask that provides a higher level of protection than a Level 1 mask. This mask is designed to protect the wearer from both airborne particles and bodily fluids, and it is suitable for use in moderate-risk situations, such as during surgical procedures or in areas with a higher level of infectious disease transmission. A Level 2 4-ply mask has an additional layer of material that provides extra protection against particulate matter and harmful substances. This layer is typically made of a high-quality filtration material, such as activated carbon or melt-blown fabric, that can filter out even smaller particles and pollutants.