Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 19 Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 85.14), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting Commodity Code Description 84 19 11 Instantaneous gas water heaters 84 19 12 Solar water heaters 84 19 19 Other 84 19 20 Medical, surgical or laboratory sterilizers 84 19 31 For agricultural products 84 19 32 For wood, paper pulp, paper or paperboard 84 19 33 Lyophilisation apparatus, freeze drying units and spray dryers 84 19 34 Other, for agricultural products 84 19 35 Other, for wood, paper pulp, paper or paperboard 84 19 39 Other 84 19 40 Distilling or rectifying plant 84 19 50 Heat exchange units 84 19 60 Machinery for liquefying air or other gases 84 19 81 For making hot drinks or for cooking or heating food. 84 19 89 Other 84 19 90 Parts