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Funnels that are made of glass and used for liquid-liquid extraction. Separation funnels are fitted with a stopcock, which is closed when the mixture to be separated is added. The funnel is then closed and is shaken and inverted; then the stopcock is opened to release excess vapor pressure and the mixture is allowed to separate. Separation funnels are used in medical and/or chemical laboratories.Funnels that are made of glass and used for liquid-liquid extraction. Separation funnels are fitted with a stopcock, which is closed when the mixture to be separated is added. The funnel is then closed and is shaken and inverted; then the stopcock is opened to release excess vapor pressure and the mixture is allowed to separate. Separation funnels are used in medical and/or chemical laboratories.
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