- About
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- About
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ACGIH is a 501(c)(3) charitable scientific organization that advances occupational and environmental health.
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- Subscriptions
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Get valuable benefits that are vital to your health and safety as an occupational, environmental, health, and safety worker.
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- Science
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- Science
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This section has been established to help educate industry, government, and the public on what TLVs and BEIs are, and how TLVs and BEIs may best be used.
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- Career Development
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- Career Development
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ACGIH is committed to providing its members and other occupational and environmental health professionals with the training and education they need to excel in their profession.
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- Publications
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- Publications
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ACGIH has publications in many different areas that fit your needs in your field.
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- Publications Store
- ACGIH Signature Publications
ACGIH Digital Library
If you need to purchase the Digital Library, click here.
If you have purchased and need to access the Digital Library, click here.
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⇒ Free Resources
COVID-19 Fact Sheet: Workers Need Respirators
COVID-19 Resources & References
A FACE COVERING GIVES MINUTES. A RESPIRATOR GIVES HOURS.
According to CDC, an uninfected person with no face covering can be infected if within 6 feet of an infected person for 15 minutes. The time increases to 27 minutes if both are wearing a cloth FC, and to 2,500 hours if both are wearing a fit-tested N95 FFR. The table below indicates time to infection for other combinations.
⇒ On Demand Education
Enjoy exclusive benefits including free and discounted publications, conferences and continuing education courses – all while supporting the TLVs® and BEIs®.