| 1 | Chemistry The class of chemical properties. |
| 2 | Mechanical Mechanical properties. |
| 3 | Component of measurable quantity Component being quantitatively measured (such as height). |
| 4 | System of measurable quantity System being investigated to obtain a measurable quantity (such as blood serum). |
| 5 | Ecological labelling Characteristic of ecological labelling. |
| 6 | Party characteristic Characteristic of a party. |
| 7 | Magnetic The property is magnetic. |
| 8 | Meter A class of characteristics describing a meter. |
| 9 | Meter reading A class of characteristics describing a meter reading. |
| 10 | Unspecified No specific class. |
| 11 | Product A class of characteristics describing a product. |
| 12 | Medical investigation The class describes a medical investigation. |
| 13 | Animal species The class describes the species of an animal. |
| 14 | Animal breed The class describes the breed of an animal species. |
| 15 | Structure Property of a structure. |
| 16 | Parameter Property of a parameter. |
| 17 | Equipment A class of characteristics describing an equipment. |
| 18 | Process A class of characteristics describing a process. |