Heading 6909

Ceramic ware for laboratory, chemical, other technical uses; ceramic troughs, tubs, similar receptacles used in agriculture; ceramic pots, jars and similar used in the conveyance or packing of goods

690911 Ceramic wares; for laboratory, chemical or other technical uses, of porcelain or china 690912 Ceramic wares; for laboratory, chemical or other technical uses, articles having a hardness equivalent to 9 or more on the Mohs scale 690919 Ceramic wares; for laboratory, chemical or other technical uses, other than articles having a hardness equivalent to 9 or more on the Mohs scale or of porcelain or china 690990 Ceramic wares; pots, jars and similar articles of a kind used for the conveyance or packing of goods and ceramic troughs, tubs and similar receptacles used in agriculture