Nail Glossary by NailMOB

Nail Industry Encyclopedia & Definitions

Definition of Threshold Limit Value

  1. The amount of a substance that is deemed safe to breathe in. Basically the same as PEL (permissible exposure limits). TLV values are set by NIOSH (National Institute for Occupational Safety and Health), while OSHA sets PEL values. You will find one or the other on your MSDS, both are expressed as ppm (parts per million). See also “PEL”.

Added to the Nail Glossary on November 11, 2016

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