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.
1 Description. 2  More Images. 3  Reviews. 4  Exerciser Breathing Ball Type Hudson 1750 AirLife Spirometer- 1 Each. 5  Lung Volume Exerciser Encourages Deep And Prolonged Breathing. 6  Dual-chamber design creates constant resistance that lifts the ball up, when patient maintains inspirations equal to the selected flow setting.