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OSHA RESPIRATORY PROTECTION PROGRAM 

Back to the Table of Contents page for information on many other subjects!

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Back to the main Respiratory Protection Page

Three Kinds of Air-purifying Respirators

partic2

 

combo

 

gasvap

 

Particulate
Respirators

Combination
Respirators

Gas & Vapor
Respirators

capture particles in the air, such as dusts, mists, and fumes
do not protect against gases or vapors
 
generally become more effective as particles accumulate on the filter and plug spaces between the fibers
 
filters should be replaced when user finds it difficult to breath through them

 

(see Selection Criteria for Particulate Filters)

are normally used in atmospheres that contain hazards of both particulates and gases
have both particulate filters and gas/vapor filters
 
may be heavier
 

 

bulletare normally used when there are only hazardous gases and vapors in the air
bulletuse chemical filters (called cartridges or canisters) to remove dangerous gases or vapors
 
bulletdo not protect against airborne particles
 
bulletare made to protect against specific gases or vapors
 
bulletprovide protection only as long as the filter's absorbing capacity is not depleted
 
bulletthe service life of the filter depends upon many factors and can be estimated in various ways

(see Respirator Change Schedules)

 

 

If you need help developing a respiratory protection program, call EHSO at 770-645-0788!