… are derived from urea by replacing one or more hydrogen atoms of the –NH 2 groups by alicyclic or aryl radicals. … obtained from urea by replacing one or more of the hydrogen atoms of the –NH 2 group by acid radicals. This heading …
… administering anaesthetics ( heading 90.18 ). (d) Divers’ respiratory masks of a kind used without oxygen or … of Notes 1 and 2 to this Chapter (see the General Explanatory Note), parts and accessories of apparatus or …
… The heading excludes electronic accordions (see the Explanatory Note to heading 92.07 , and the General Explanatory Note to this Chapter). (4) Mouth organs …
… and rods, or as waste and scrap (for the latter see the Explanatory Note to heading 72.04); (C) Wrought metal , … sintered but unmounted, in heading 82.09 (see corresponding Explanatory Note). …
… pyrometers with thermocouples of precious metals; laboratory instruments and apparatus and parts thereof of … is therefore largely confined to articles for technical or laboratory use such as crucibles, cupels and certain …
… up into specific identifiable articles. ° ° ° Subheading Explanatory Notes. Subheadings 7305.11, 7305.12, 7305.19 and 7305.20 The provisions of the Explanatory Note to subheadings 7304.11, 7304.19, 7304.22, …
