Harmonized System

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Section VI > Chapter 28 > Heading 2827

Explanatory notes

… ammoniac, ammonium muriate) (NH 4 Cl). Results from the neutralisation of hydrogen chloride with ammonia. It may be … for hardening varnishes or glues, in electroplating, in photography (fixing solutions), etc.        See Explanatory … or melted form, in porous masses or in flakes, or may be hydrated with 6 H 2 O (crystalline or granulated). It is used …

Section VI > Chapter 28 > Heading 2843

Explanatory notes

…               ‑ Silver compounds : 2843.21 ‑ ‑ Silver nitrate 2843.29 ‑ ‑ Other 2843.30 ‑ Gold compounds 2843.90 ‑ … of their inorganic salts. Colloidal silver occurs in small grains or flakes, bluish, brownish or greenish‑grey, with a … or barium are used for obtaining fluorescent screens for radiography. (C) AMALGAMS OF PRECIOUS METALS These are …

Section XVIII > Chapter 90 > Heading 9029

Explanatory notes

… opisometers or planimeters of heading 90.17 or 90.31 . (B)  Apparatus indicating a speed of revolution or a linear speed … remain classified here whether or not they incorporate a clockwork recording device, and whether or not they … through an optical instrument (a disc with one or more radial slots or “windows”) which interrupts the line of …

Section XVI > Chapter 84 > Heading 8425

Explanatory notes

… hoists other than skip hoists or hoists of a kind used for raising vehicles : 8425.11 ‑ ‑ Powered by electric motor … often mounted on a trolley or crab running on an overhead rail. (3)   Hoists consisting of a roller chain running over … swivelling supports from which ships’ boats, etc., may be raised or lowered by means of pulley tackle type hoisting …

Section VI > Chapter 35 > Heading 3507

Explanatory notes

… to : (a)  their chemical activity as oxidoreductases, transferases, hydrolases, lyases, isomerases, ligases; or (b)  their biological activity as … (A)  “Pure” (isolated) enzymes .         These are generally in crystalline form, and are mainly intended for …

Section VI > Chapter 29 > Heading 2941

Explanatory notes

… and their derivatives; salts thereof 2941.30 - Tetracyclines and their derivatives; salts thereof 2941.40 - … activity against micro-organisms (e.g., antibacterials, antivirals, antifungals, antiparasitic agents, etc.). Natural antibiotics of this heading are   substances …

Section XVI > Chapter 84 > Heading 8445

Explanatory notes

… Carding machines 8445.12 ‑ ‑ Combing machines 8445.13 ‑ ‑ Drawing or roving machines 8445.19 ‑ ‑ Other 8445.20 ‑ … hemp, etc.) after retting. (4)   Machines for tearing rags, old cordage or similar scrap textiles to reduce them …

Section VI > Chapter 29 > Heading 2932

Explanatory notes

… only (+).               - Compounds containing an unfused furan ring (whether or not hydrogenated) in the structure : 2932.11 - - Tetrahydrofuran 2932.12 - - 2-Furaldehyde (furfuraldehyde) … ( umbelliferone ). White crystals. Absorbs ultra-violet rays, hence its use in suntan lotions and creams. (f)    …

Section VI > Chapter 28 > Heading 2837

Explanatory notes

… cyanamide (see heading 31.02) with charcoal or by the interaction of pulverised coal, sodium and gaseous ammonia. … to the melting‑point it absorbs oxygen; may also give hydrates. Is presented in sealed vessels. Used in the … of gold or silver, in gold‑ or silver‑plating, in photography, in lithography, as a parasiticide or …

Section XVI > Chapter 84 > Heading 8481

Explanatory notes

… valves 8481.20 ‑ Valves for oleohydraulic or pneumatic transmissions 8481.30 ‑ Check (nonreturn) valves 8481.40 ‑ … an aperture (e.g., gate, disc, ball, plug, needle or diaphragm). They may be operated by hand (by means of a key, … cocks and shut off valves, etc., for level gauges. (7)   Radiator drainage taps. (8)   Inner‑tube valves. (9)   Float …