From Chapter 28: Chapter 28
| HTS Code | Description | General Duty |
|---|---|---|
| 2845100000 | Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined Heavy water (Deuterium oxide) | Free |
| 2845200000 | Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined Boron enriched in boron-10 and its compounds | Free |
| 2845300000 | Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined Lithium enriched in lithium-6 and its compounds | Free |
| 2845400000 | Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined Helium-3 | Free |
| 2845900100 | Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined Other | Free |