Cincinnati, Ohio — July 28, 2016 —ACGIH® announced today the release of its two-tier Under Study list pursuant to changes previously made to its TLV®/BEI® Development Process.
In 2006, ACGIH® began providing additional information on the status of chemical substances and physical agents that are on the Under Study list. In addition to the practice of publishing an updated Under Study list on the ACGIH® website (http://www.acgih.org/tlv-bei-guidelines/documentation-publications-and-data/under-study-list), in the ACGIH® Annual Reports by February 1 of each year, and in the annual TLVs® and BEIs®book, the Under Study list will be updated annually by July 31 and presented in a two-tier list. Tier 1 entries indicate which chemical substances and physical agents may move forward as an NIC or NIE in the upcoming year, based on their status in the development process. Tier 2 consists of those chemical substances and physical agents that will not move forward, but will either remain on, or be removed from the Under Study list for the next year.