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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 ...
These are used in filtration under low pressure with a Buchner flask. [2] Hot filtration funnel is a less commonly seen funnel where the funnel is jacketed, and surrounded by a heated fluid. [3] Eco funnel is equipped with a latching lid and gasket to reduce chemical contamination and conform to OSHA and EPA regulations. [4]
A filter funnel is a laboratory funnel used for separating solids from liquids via the laboratory process of filtering. [1] In order to achieve this, a cone-like shaped piece of filter paper is usually folded into a cone and placed within the funnel. The suspension of solid and liquid is then poured through the funnel.
A separatory funnel, also known as a separation funnel, separating funnel, or colloquially sep funnel, is a piece of laboratory glassware used in liquid-liquid extractions to separate (partition) the components of a mixture into two immiscible solvent phases of different densities. [1]
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.
An ordinary dropping funnel lacks the pressure-equalizing glass tube at the right side. A dropping funnel or addition funnel is a type of laboratory glassware used to transfer liquids . They are fitted with a stopcock which allows the flow to be controlled.
A thistle tube is a piece of laboratory glassware consisting of a shaft of tube, with a reservoir and funnel-like section at the top. Thistle tubes are typically used by chemists to add liquid to an existing system or apparatus. Thistle funnels are used to add small volumes of liquids to an exact position. Thistle funnels are found with or ...
A watering can (or watering pot or watering jug) is a portable container, usually with a handle and a funnel, used to water plants by hand. It has been in use since at least A.D. 79 and has since seen many improvements in design. Apart from watering plants, it has varied uses, as it is a fairly versatile tool.