| Acronym | Meaning |
| SDWA | Safe Drinking Water Act |
| SDFFF | Sedimentation Field Flow Fractionation (particle Analysis) |
| REX | Relativistically Parametrized Extended Hueckel |
| CDRH | Center For Devices And Radiological Health |
| RARE | Rapid Acquisition Relaxation-enhanced |
| OTE | Oxygen Transfer Efficiency (of Aeration Diffusers) |
| ICP-ROA | Incident Circular Polarization Raman Optical Activity |
| BFEM | Bright Field Electron Microscopy |
| CNP | C-type Natriuretic Peptide |
| CFS | Continuous Flow System |