The expression "hand sieves and hand riddles" applies to articles made of strong gauze or other mesh material (of various mesh sizes) mounted in a rectangular or circular frame (generally of wood or metal), and used for separating solid substances according to particle size.
The materials most commonly used for the mesh are horsehair, man-made monofilaments, silk yarns, spun gut, wire (steel, iron, brass wire, etc.). The heading includes : Hand sieves and hand riddles for cinders, sand, seeds, garden mould, etc.; bolting cloth sieves (e.g., for flour); household sieves (e.g., for flour); sieves used in laboratories (to test fineness of cement, moulding sands, fertilisers, wood flour, etc.), including those which can be connected together to form a series; precision sieves for sorting precious or semi-precious stones (e.g., diamonds).The heading excludes : (a) Sieves and riddles in the nature of fixed articles (e.g., screens resting on the ground for sifting earth or gravel - generally heading 73.26). (b) Simple strainers (e.g., for cheese) consisting of a container with a perforated sheet-metal bottom; funnels fitted with a filtering device; milk strainers; strainers for filtering paints, whitewash, fungicidal solutions, etc. (generally Chapter 73). (c) Sieves and riddles designed to be mounted on machines or appliances (e.g., for the milling industry, in agriculture, for screening stones, ores, etc.), such articles being classified as parts of machinery, etc., in accordance with Note 2 to Section XVI, generally in the same heading as the machine for which they are solely or principally designed (e.g., heading 84.37 or 84.74).
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