PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES > TANNING OR DYEING EXTRACTS; TANNINS AND THEIR DERIVATIVES; DYES, PIGMENTS AND OTHER COLOURING MATTER; PAINTS AND VARNISHES; PUTTY AND OTHER MASTICS; INKS > Prepared pigments, prepared opacifiers and prepared colours, vitrifiable enamels and glazes, engobes (slips), liquid lustres and similar preparations, of a kind used in the ceramic, enamelling or glass industry; glass frit and other glass, in the form of powder, granules or flakes
1. (A) Products (other than radioactive ores) answering to a description in heading 2844 or 2845 are to be classified in those headings and in no other heading of the Nomenclature. (B) Subject to paragraph (A) above, products answering to a description in heading 2843, 2846 or 2852 are to be classified in those headings and in no other heading of this Section. 2. Subject to Note 1 above, products classifiable in heading 3004, 3005, 3006, 3212, 3303, 3304, 3305, 3306, 3307, 3506, 3707 or 3808 by reason of being put up in measured doses or for retail sale are to be classified in those headings and in no other heading of the Nomenclature. 3. Goods put up in sets consisting of two or more separate constituents, some or all of which fall in this Section and are intended to be mixed together to obtain a product of Section VI or VII, are to be classified in the heading appropriate to that product, provided that the constituents are: (a) having regard to the manner in which they are put up, clearly identifiable as being intended for use together without first being repacked; (b) presented together; and (c) identifiable, whether by their nature or by the relative proportions in which they are present, as being complementary one to another.
Source: European Commission - CN Explanatory Notes (CNEN) and HS legal notes.