 | 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
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- are normally used when there are only hazardous gases and vapors in the air
- use chemical filters (called cartridges or canisters) to remove dangerous gases or vapors
- do not protect against airborne particles
- are made to protect against specific gases or vapors
- provide protection only as long as the filter's absorbing capacity is not depleted
- the service life of the filter depends upon many factors and can be estimated in various ways
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(see Respirator Change Schedules) |
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 If you need help developing a respiratory protection program, call EHSO at 770-645-0788!
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