| Acronym | Meaning |
| CCC | Calibration Check Compounds |
| DCA | Discriminant Component Anal. |
| FETI | Fire, Explosion And Toxicity Index |
| MSGC | Microstrip Gas Chamber |
| ETI | Environmental Testing Industry |
| QUAL2E | Enhanced Stream Water Quality Model |
| GRCDA | Government Refuse Collection And Disposal Association |
| TSH | Thyroid-stimulating Hormone |
| AFID | Alkali Flame Ionization Detector |
| DU | Dobson Units |