| Acronym | Meaning |
| ELLPAT | Environmental Lead Laboratory Proficiency Analytical Testing |
| MCD | Magnetic Circular Dichroism |
| CATS | Corrective Action Tracking System |
| SDME | Single-drop Microextraction |
| PEDRI | Proton-electron Double-resonance Imaging |
| ECNI | Electron Capture Negative Ionization |
| ACE | Aerosol Characterization Experiment |
| IVAP | Intimate Valence Alternation Pairs (bonding Model In Electronic Structure Calcns.) |
| GTE | Global Tropospheric Experiment |
| EPS | Emission Preprocessor System |