June 6, 2009

ACGIH® has released its 2009 two-tier Under Study list pursuant to changes made to its TLV®/BEI® Development Process in 2006. Tier 1 indicates 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. For more information or to view the lists, visit us at:

http://www.acgih.org/TLV/Studies.htm