3.3 Abbreviated terms
| CAS | Chemical Abstracts Service |
| CDD | Common Data Dictionary |
| DCS | Distributed Control Systems |
| FID | Flame Ionisation Detector |
| IRDI | International Registration Data Identifier |
| NDIR | NonDispersiveInfrared |
| NOA | NAMUR Open Architecture |
| PAT | Process Analyser Technology |
| TDL | Tunable Diode Laser |
| TOC | Total Organic Carbon |