Explanatory notes
… (c) Refractory goods of heading 69.03; ceramic wares for laboratory, chemical or other technical uses, of … Most of them are used mainly for scientific purposes (laboratory research work, analysis, astronomy, etc.), for … instruments and appliances for testing materials. (E) Laboratory instruments and appliances. (F) A large group …Legal note
… (c) Refractory goods of heading 69.03; ceramic wares for laboratory, chemical or other technical uses, of …