Division 1
United Kingdom
Controlled substances for essential laboratory and analytical uses shall contain only controlled substances manufactured to the following purities:
| Substance | % |
|---|---|
| CTC (reagent grade) | 99,5 |
| 1,1,1-trichloroethane | 99,0 |
| CFC 11 | 99,5 |
| CFC 13 | 99,5 |
| CFC 12 | 99,5 |
| CFC 113 | 99,5 |
| CFC 114 | 99,5 |
| Other controlled substances with a boiling point > 20 °C | 99,5 |
| Other controlled substances with a boiling point < 20 °C | 99,0 |
These pure controlled substances may be subsequently mixed by manufacturers, agents, or distributors with other chemicals controlled or not controlled by the Protocol as is customary for laboratory and analytical uses.