… Isotopes other than those of heading 28.44; compounds, inorganic or organic, of such …
Explanatory notes
… 28.45 ‑ Isotopes other than those of heading 28.44; compounds, inorganic or organic, of such … 28.44. This heading covers stable isotopes, that is, non‑radioactive isotopes and their inorganic or organic … (2) Heavy water , which is deuterium oxide. Occurring in ordinary water at a level of 1 part in 6,500. It is normally …