A half-mask respirator without cartridge is personal protective equipment (PPE) designed to protect the wearer’s respiratory system from harmful airborne particles, gases, vapors, or fumes. It covers the nose and mouth and forms a seal around the face to prevent contaminants from entering the wearer’s respiratory system. The “half-mask” refers to the fact that it only covers the lower half of the face, from the nose to the chin. This type of respirator is often used in environments where there is a risk of inhaling particulate matter, such as dust or other airborne particles.