| Acronym | Meaning |
| PSB | Product Safety Branch |
| MAST | Mega-Amp Spherical Tokamak |
| PCP | Pentachlorophenol (Reg: 87865) |
| NCSCI | National Center For Standards And Certification Information |
| CDOM | Colored Dissolved Organic Matter |
| LRAT | Long-range Atmospheric Transport |
| TEQ | Toxicity Equivalent |
| MPT | Microwave Plasma Torch |
| FMS | Frequency Modulation Spectroscopy |
| TCSM | Tropospheric Chemistry Systems Model |