Harmonized System

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Section VI > Chapter 28 > Heading 2825

Explanatory notes

… hydroxides and peroxides of this Chapter not included in preceding headings .        The most important products are : (1)     Hydrazine and its inorganic salts .     Hydrazine (NH 2 .NH 2 ), a basic product prepared by the oxidation of ammonia with sodium …

Section XVI > Chapter 84 > Heading 8418

Explanatory notes

… are in the main machines or assemblies of apparatus for the production, in a continuous cycle of operations, of low … expanded gas from the evaporator and delivers it under pressure to (2)   The condenser or liquefier where the gas … brine) circuit, but the evaporation is induced by a vacuum produced by an ejector pump working with a steam condenser. …

Section XVI > Chapter 84 > Heading 8430

Explanatory notes

… rock cutters and tunnelling machinery : 8430.31 ‑ ‑ Self‑ propelled 8430.39 ‑ ‑ Other               ‑ Other boring or … etc.; earth excavation, digging, drilling, etc.), or for preparing or compacting the terrain (e.g., scraping, …

Section VI > Chapter 28 > Heading 2811

Explanatory notes

… deeply into the skin and carbonises organic matter. It is presented in metal bottles lined with lead, gutta‑percha or … etching on glass, manufacturing ashless filter paper, preparation of tantalum, of fluorides, scouring and pickling … pieces, in organic synthesis, or as a control in fermenting processes. (2) Fluoroacids . These include : (a) …

Section XVI > Chapter 85 > Heading 8501

Explanatory notes

… includes rotary motors and linear motors. (A) Rotary motors produce mechanical power in the form of a rotary motion. … circumstances in which the motor will operate (e.g., dust proof, drip proof or flame proof motors; non‑rigid mountings …        The heading includes “outboard motors”, for the propulsion of boats, in the form of a unit comprising an …

Section VI > Chapter 28 > Heading 2836

Explanatory notes

… or by combining carbon dioxide with gaseous ammonia in presence of steam.        These processes give commercial ammonium carbonate which, in … carbonate is used as a mordant in textile dyeing or printing; as a detergent for wool; an expectorant in …

Section XVIII > Chapter 90 > Heading 9032

Explanatory notes

… apparatus for automatically controlling the flow, level, pressure or other variables of liquids or gases, or for … are directly activated by means of a switch, e.g., when the predetermined value is reached. Instruments and apparatus …

Section VI > Chapter 30 > Heading 3006

Explanatory notes

… barriers, whether or not absorbable 3006.30 - Opacifying preparations for X-ray examinations; diagnostic reagents … contraceptive preparations based on hormones, on other products of heading 29.37 or on spermicides 3006.70 - Gel … item covers all kinds of ligatures for surgical sutures, provided they are sterile. These ligatures are usually put …

Section VI > Chapter 28 > Heading 2827

Explanatory notes

… include the pickling of metals, in the textile dyeing or printing industry, in tanning, as a fertiliser, in the … extracted from natural Stassfurt salts, or obtained as a by‑product of the manufacture of sodium carbonate. It is white, … or condensation agent in organic synthesis (e.g., preparation of amines from phenol) and for drying gases. It …

Section XVIII > Chapter 90 > Heading 9027

Explanatory notes

… an optical device comprising polarising and analysing prisms, a tube holder in which the substance to be analysed … in oil refineries and in biology (for measuring the protein content of blood plasma or discharges, etc.).        …