ACGIH Board Ratifies 2024 TLVs, BEIs

ACGIH announced recently that its board of directors has ratified 2024 Threshold Limit Values (TLVs) for chemical substances and physical agents and Biological Exposure Indices, or BEIs. According to ACCGIH’s substances and agents listing, the board adopted TLVs for chemical substances such as acrolein, endotoxins, and isopropyl ether. A BEI for platinum was also adopted.

The board has also approved recommendations for additions to the Notice of Intended Changes list. The NIC list includes substances and agents for which a limit or BEI is proposed for the first time, for which changes are proposed, for which retention as an NIC is proposed, or for which withdrawal of the adopted TLV or BEI is proposed. Substances and physical agents that appear on the NIC list are considered “trial values.” Chemical substances on the 2024 NIC list include carbon monoxide, diacetone alcohol, nitric acid, and triethylene glycol.

The full list of 2024 TLVs and BEIs is available on ACGIH’s website.