American Industrial Hygiene Association

​NOTICE: The AIHA office will be closed for the Thanksgiving holiday on Thursday, Nov. 26, and Friday, Nov. 27, reopening on Monday, Nov. 30. Online resources, including the marketplace and Member Center, will remain available. Any orders placed Nov. 26–27 will be fulfilled when the AIHA office reopens on Nov. 30.

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​Notice: To locate an accredited testing laboratory or for general information about laboratory accreditation, please go to the AIHA Laboratory Accreditation Programs, LLC site at For more information on formaldehyde, visit the AIHA Formaldehyde Resource Center.

 Featured Video


Thanks to everyone for a successful Fall Conference! Watch some of the highlights below.

IH Calc​ulator Lite

Get IH Calculator LITE from the Apple Store - FREE!