… polarimeter, electronic polarimeters are also fitted with a photoelectric cell. (2) Half‑shadow polarimeters for … Certain of these instruments are based on the use of a photoelectric cell. In some instruments of this type a paper … colour after reaction with a gas. These instruments use two photoelectric cells measuring the colour before and after …
… or not in drips) or a spray. This heading, however, does not include water-jet or water-abrasive jet cutting … percussion caps or other opening devices. The heading does not include : (a) Fire extinguishing grenades and … movement of the apparatus for working purposes, but it does not include machines constituting true vehicles within …
… etc., or by re-distillation), provided this treatment does not produce separate chemically defined compounds in a … in petroleum spirit. However, this heading does not include liquid synthetic polyolefins of which less … is used ( Chapter 39 ). Further, the heading does not include oils with a predominance by weight of …
… ‑ salts of thiosulphuric acid (H 2 S 2 O 3 ) which does not exist in the pure state. The heading excludes … agent for the treatment of latex, in tanning, in oenology (as an antiseptic to preserve wine) and to reduce … hydrogen sulphite , crystalline, used in dyeing and in oenology. (b) Dipotassium disulphite (potassium …
… they are designed. To reduce the tendency to de‑magnetise, horseshoe‑shaped magnets are often furnished with a bar of … Electro‑magnetic brakes . These generally consist of shoes which, under the influence of electro‑magnets, act on …
… 6401.10 - Footwear incorporating a protective metal toe-cap - Other footwear : 6401.92 - - … would include, inter alia , certain snow-boots, galoshes, overshoes and ski-boots. Footwear remains in this heading even …
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