| Acronym | Meaning |
| IGC | International Geological Congress |
| IRES | Infrared Emission Spectroscopy |
| GANC | Generalized Acid Neutralization Capacity Test |
| SABS | South African Bureau Of Standards |
| WSIA | Water Supply Improvement Association |
| EROD | Ethoxyresorufin-O-deethylase (REG 59793-97-4) |
| MON | Motor (method) Octane No. |
| HIRBS | Heavy-ion Rutherford Backscattering Spectrometry |
| NESHAP | National Emission Standards For Hazardous Air Pollutants |
| FITC | Fluorescein Isothiocyanate |