| Acronym | Meaning |
| LRM | Laboratory Reference Material |
| IAHR | International Association For Hydraulic Research |
| ACIMS | Active Chemical Ionization Mass Spectroscopy |
| TREF | Temperature Rising Elution Fractionation |
| CCSDT | Coupled Cluster With Single |
| ALRSS | Advanced Land Remote Sensing System |
| ESDMS | Electron Stimulated Desorption Mass Spectrometry |
| IP | Impact Parameter Approximation |
| DTPMP | Diethylenetriaminopenta(methylenephosphonic Acid) |
| PAO | Polyphosphate Accumulating Organism |