… into electrical impulses. (2) Laser optical reading systems . (3) Magnetic type sound‑heads for recording, … sound‑heads which are used together with frame viewers on synchronisation tables ( heading 90.10 ). …
… The objective lens in an optical instrument is the lens system that faces the object, giving an image of the latter. … group of lenses in a single mounting. Eyepieces are optical systems (placed near the eyes) through which a magnified …
… handling machines usually based on pulley, winch or jacking systems, and often including large proportions of static … or rotating the whole machine by a jacking or other lifting system. The heading also includes wagon shaking machines …
… either a filter or a flexible tube connected to a filter system carried on the back or chest. A more simple type … treated with activated carbon or having a central layer of synthetic fibres, and masks of textile materials, used by …
… and obtained from the scales of certain fish, or (b) a synthetic nacreous (pearl) pigment (e.g., mica coated with … lacquer (e.g., nitrocellulose lacquer) or in a solution of synthetic polymers. These products are used in the …
… flat sheet is gradually cross-folded by each of the roller systems until the desired section profile is obtained. … Roll forming machines, passing products through roller systems, give them the required profile, in which the change …
… ( heading 14.04 ). (b) Tanning extracts mixed with synthetic tanning substances ( heading 32.02 ). (c) … of products of headings 29.36 to 29.39 or 29.41 . (d) Synthetic tanning substances, whether or not mixed with …
… therefore covers, inter alia , irrigators, nozzles (for syringes, enemas, etc.), urinals, bed pans, chamber pots, … and appliances of Chapter 90 , for example, hypodermic syringes, special cannulae and other articles being medical, …
… etc. Hydrogen chloride gas is often employed in organic syntheses (e.g., in the manufacture of chloroprene, vinyl … on contact with water or if heated. It is used in organic syntheses (manufacture of saccharin, thioindigo, indigosols, …
… packings. It is used for drying gases, and in organic synthesis. Diphosphorus pentaoxide exists in crystalline, … supersaturated at room temperature, is sometimes known as “syrupy phosphoric acid”. Phosphoric acid is used to prepare …
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