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An air duster, also known as compressed air canister or canned air, is a device that expels compressed gas in a high-velocity stream. Although it might sound like they are cans of air that isn't really the case. Most aerosol dusters contain a refrigerant/ propellant, so they can't be considered as 'air'. RS offer a range of high-quality cleaning products from leading brands including Ambersil, El...