… and glazes, engobes (slips), liquid lustres and similar preparations, of a kind used in the ceramic, enamelling or glass …
Explanatory notes
… glazes, engobes (slips), liquid lustres and similar preparations, of a kind used in the ceramic, enamelling or glass … and prepared colours are dry mixtures formed by the heat treatment of oxides (of antimony, silver, arsenic, … copper, chromium, cobalt, etc.) or salts (fluorides, phosphates, etc.) with or without fluxes or other …