ceiling value, \(\text{CV}\)

https://doi.org/10.1351/goldbook.CT06815
Airborne concentration of a potentially toxic substance which should never be exceeded in a worker’s breathing zone.
Source:
PAC, 2004, 76, 1033. (Glossary of terms used in toxicokinetics (IUPAC Recommendations 2003)) on page 1043 [Terms] [Paper]