Buchner funnel with fritted disc 150 ml
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Buchner funnel with fritted disc 150 ml
There are many different kinds of funnels that have been adapted for specialized applications in the laboratory . filter funnels, thistle funnels ( shaped like thistle flowers) ,and dropping funnels have stopcocks which allow the fluids to be added to a flask slowly. for solids, a power funnel with a wide and short stem is more appropriate as it does not clog easily.
When used with filter paper , filter funnels, buchner and hirsch funnels can be used to remove fine particles from a liquid in a process called filtration. for more demanding applications . the filter paper in the letter two may be replaced with a sintered glass frit. separatory funnels are used in liquid-liquid extractions . the tullgren funnel is used to collect arthropods from plant litter or similar material.