SEARCH Articles Figures Tables Host PEL PEL (permissible exposure limits PEL Pseudomonas fluorescens lipase) PEL brush PEL, defined PEL-time-weighted average PELS and TLVs Permissable Exposure Levels PELs) Time-Weighted Average-Permissible Exposure Limit TWA-PEL) Toxicants PELs, table Toxicology PELs)