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.
There are two types of oxygen concentrators: a Portable Oxygen Concentrator and a Stationary Oxygen Concentrator. A stationary or home oxygen concentrator usually features built-in wheels to move from room to room and is powered by AC current (plugging it into the wall).nly a few portable oxygen concentrators can provide continuous flow and these oxygen machines are slightly larger than the carry type travel concentrators that accompany the patient in a backpack or handbag. The continuous flow portable concentrators usually have built-on wheels or a cart for easy transport.