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Choosing Respirators Based on Non-IDLH Situations

OSHA's chart for respirator selection also provides a section for non-IDLH situations. It suggests the following respirators to combat the hazards listed below:

Gas and vapor contaminants: Positive-pressure SARs, gas masks, and chemical-cartridge or canister respirators

Particulate contaminants: Positive-pressure SAR (including abrasive blasting respirators), powered air-purifying respirators equipped with high-efficiency filters, any air-purifying respirator with a specific particulate filter

Gaseous and particulate contaminants: Positive-pressure supplied respirators, gas masks, chemical-cartridge respirators with mechanical filters

Smoke and other fire-related contaminants: Positive-pressure SCBAs

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