ISPE Glossary of Pharmaceutical and Biotechnology Terminology

Print this page         
Find Definition by Term and/or Language
Term Language (Optional)
Browse All Terms
Beginning With By Language
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z :: All English

TLV (Threshold Limit Value)

An ACGIH designated degree of exposure to contaminants and expressed as parts of vapor or gas per million parts of air by volume at 25°C and 760mmHG pressure, or as approximate milligrams or particulate per cubic meter of air (mg/m³). An exposure level under which most people can work consistently for 8 hours a day, with no harmful effects. TLVs are listed as either an 8-hour TWA or a 15-minute STEL.

Do you have a term that should be included in the glossary?
Submit a term for review


  • Click to go to My Communities of Practice
  • Click to go to My Affiliate or Chapter
  • Click to go to My Profile
Click to go to the Member Gift