WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
28.49 (hydrogen peroxide), or heading 18.h (distilled and conductivity water and water of similar purity, including water treated with ion-exchange media). 32.06), prepared pigments, pr ared opacifiers and prepared colours, vitrifiable enamels and glazes and sirmlar products of the h n used in the ceramic, enamellin or glass industries (heading 32.07), and other preparations of Chapter 32, constituted by oxides, hy oxides or bases mixed with other products. (e) Colouring matter with a basis of metal oxides (heading ? (f) Opacifylng preparations for de-lustring man-made fibres (heading 38.09) and pickling preparations for metal surfaces (heading 38.10). (g) Natural or synthetic precious or semi-precious stones (headings 71.02 to 71.05). -
1.- Except where the context otherwise requires, the headings of this Chapter apply only to : (a) Separate chemical elements and separate chemically defined compounds, whether or not containing impurities; (b) The products mentioned in (a) above dissolved in water; (c) The products mentioned in (a) above dissolved in other solvents provided that the solution constitutes a normal and necessary method of putting up these products adopted solely for reasons of safety or for transport and that the solvent does not render the product particularly suitable for specific use rather than for general use; (d) The products mentioned in (a), (b) or (c) above with an added stabiliser (including an anti-caking agent) necessary for their preservation or transport; (e) The products mentioned in (a), (b), (c) or (d) above with an added anti-dusting agent or a colouring substance added to facilitate their identification or for safety reasons, provided that the additions do not render the product particularly suitable for specific use rather than for general use.