| Acronym | Meaning |
| IDMS | Isotope Dilution Mass Spectrometry |
| SXAPS | Soft X-ray Appearance Potential Spectroscopy |
| LMDPE | Linear Medium Density Polyethylene |
| APNEA | Active Passive Neutron Examination And Assay |
| MEPSAG | Minimum Energy Path Semiclassical Adiabatic Ground-state (tunneling Approxn.) |
| NPCVD | Normal Pressure Chemical Vapor Deposition |
| WECC | Western European Calibration Cooperation |
| MRS | Magnetic Resonance Spectroscopy |
| LFC | Lowest Feasible Concentration |
| NDSL | Non-Domestic Substances List |