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 DOMESTIC PURPOSES; INSTANTANEOUS OR STORAGE WATER HEATERS, NON-ELECTRIC. 84 19 90 PARTS: MACHINERY, PLANT OR LAB. EQUIP. FOR THE TREATMENT OF MATERIALS ETC Commodity Code Description 84 19 90 00 PARTS: MACHINERY, PLANT OR LAB. EQUIP. FOR THE TREATMENT OF MATERIALS ETC