Harmonized System

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Section XVIII > Chapter 91 > Heading 9105

Explanatory notes

… placing on a flat surface such as a table. Master clocks sometimes control other electric appliances, such as … Atomic clocks, regarded as autonomous Primary Reference Sources, designed to generate accurate synchronisation …

Section VI > Chapter 29 > Heading 2911

Explanatory notes

… in which the carbon-atom adjacent to the ether-oxygen atom also bears a hydroxyl group. “Acetals and hemiacetals with … Colourless liquid with an ether-like odour; used as a solvent, as an anaesthetic and in organic synthesis. (2)   …

Section XIII > Chapter 70 > Heading 7019

Explanatory notes

… those glass fibre articles excluded from other headings by reason of their nature. Glass fibres have the following … they are non-hygroscopic; they do not burn and have low sound and thermal conductivity (in some cases); they do not rot and are resistant to water and …

Section VI > Chapter 38 > Heading 3804

Explanatory notes

… blackish mass with a vitreous fracture (in this case, it is sometimes known as sulphite pitch or cellulose pitch), or of … Residual lyes from the manufacture of wood pulp by the soda or sulphate processes , whether or not concentrated, … These lyes, which are usually black, are the source of tall oil and are sometimes used to produce sodium …

Section XIII > Chapter 68 > Heading 6809

Explanatory notes

… coloured or not, such as stucco (plaster mixed with a solution of glue, and which, after moulding, often has the … lacquered, bronzed, gilded or silvered (by any process), or sometimes coated with asphalt; they may also be reinforced. … geometric models, relief maps and other models, designed solely for demonstrational purposes, of heading 90.23 . …

Section VII > Chapter 39 > Heading 3902

Explanatory notes

… polyethylene. Polypropylene and propylene copolymers also have a very wide range of applications, for example, … meeting the requirements of Note 3 (a) to this Chapter, is also included in this heading. It is a viscous liquid used …

Section XIII > Chapter 70 > Heading 7010

Explanatory notes

… commercially for the conveyance or packing of liquids or of solid products (powders, granules, etc.). They include : … made of ordinary glass (colourless or coloured) although some bottles (e.g., for perfumes) may be made of lead … (e.g., for beer bottles, bottles for aerated waters, soda water syphons, etc.).        These containers remain in …

Section XIII > Chapter 69 > Heading 6901

Explanatory notes

… usually mixed with binders (such as clay or magnesia) and sometimes with other substances (e.g., asbestos, hair, …

Section XV > Chapter 79

Explanatory notes

… or sphalerite), though the carbonate and silicate ores (smithsonite, hemimorphite, etc.) are also used (see the … galvanising, or may be refined by various methods.        Some impure metal is also deposited in the retort extensions … The zinc oxide is dissolved in dilute sulphuric acid. This solution of zinc sulphate is carefully purified to remove …

Section XVI > Chapter 85 > Heading 8507

Explanatory notes

… by the fact that the electrochemical action is reversible so that the accumulator may be recharged. They are used to … shape, so designed to fit the device for which they are the source of electricity. They may be within waterproof … automatic data processing machines, portable lamps. Some lead ‑ acid accumulators are fitted with a hydrometer, …