The illustration shows a generic example of a box plot with the maximum, third quartile, median, first quartile, and minimum values labeled. The relative vertical spacing between the labels reflects the values of the variable in proportion.
Respirator Types Two basic types of respirators are: â¢ air-purifying; andâ¢ supplied-air respirators. Air-purifying respirators remove airborne contaminants such as particles, toxic vapors, and/or gases.
The commonly known N-95 filtering facepiece respirator or dust mask is one type of particulate respirator, often used in hospitals to protect against infectious agents. Particulate respirators are airpurifying respirators because they clean particles out of the air as you breathe.