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A typical kitchen funnel A ceramic Roman kitchen funnel (1st–3rd century AD) A funnel is a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening. [1] [2] Funnels are usually made of stainless steel, aluminium, glass, or plastic. The material used in its construction should be ...
A Büchner funnel is a piece of laboratory equipment used in filtration. [1] It is traditionally made of porcelain , but glass and plastic funnels are also available. On top of the funnel-shaped part there is a cylinder with a fritted glass disc/perforated plate separating it from the funnel.
It is primarily used together with a Büchner funnel fitted through a drilled rubber bung or an elastomer adapter (a Büchner ring) at the neck on top of the flask for the filtration of samples. The Büchner funnel holds the sample isolated from the suction by a layer of filter paper. During filtration, the filtrate enters and is held by the ...
A funnel for hot filtration Two funnels, A - a simple stemmed funnel. B - a ground glass powder funnel. Plain funnels exist in various dimensions, with longer or shorter necks. Filter funnels have a neck of a thin capillary tube and ribs which increase the filter-papers' effectiveness and thus accelerate the process of filtering. [1]
Southern Chile, south-west Argentina, Chiloé Island, and northwest South America are home to the deer. [6] [10] The northern pudú is found in the northern Andes of Colombia, Venezuela, Ecuador, and Peru, from 2,000 to 4,000 m (6,600 to 13,100 ft) above sea level. The southern species is found in the slope of the southern Andes from sea level ...
A fritted filter is often part of a glassware item, so fritted glass funnels and fritted glass crucibles are available. [ 2 ] Laboratory scale spargers (also known as gas diffusing stones or diffusors) as well as scrubbers , and gas-washing bottles (or Drechsel bottles [ 3 ] ) are similar glassware items which may use a fritted glass piece ...