| Abbreviation | Definition |
|---|---|
| PEP | Physical Equivalent Practice |
| PERC | Perchloroethylene |
| PERC | Tetrachloroethylene |
| PET | Poly-Ethylene Teraphthalate |
| PET | polyethylene terephthalate |
| PETG | Poly-Ethylene Terephthalate Glycol |
| PETN | PentaErythrite TetraNitrate |
| PEX | Cross-linked PolyEthylene |
| PFAA | Plasma Free Amino Acid |
| PFAS | Per and polyFluoroAlkyl Substances |
| PFAS | Per- and poly-FluoroAlkyl Substances |
| PFC | Pourable Fluid Capacity |
| PFCS | Poly-Ferric Cholride Sulfate |
| PFG | Pulsed Field Gradient |
| PFGE | pulsed-field gel electrophoresis |
| PFOA | Per Flouro Octanoic Acid |
| PFOA | Perfluorooctanoic Acid |
| PFT | Per Fluorocarbon Tracer |
| PFZ | Protofluor Z |
| PG | Propylene Glycol |