Funnel, Plain 60° Angle Short Stem (100mm) MERCK

Funnel, Plain 60° Angle Short Stem (100mm) MERCK
Brand: Merck (Glass wares)
Product Code: 1.74392.0100
Availability: In Stock
Price: Rs. 120
This product has a maximum quantity of 20

Laboratory funnels are funnels that have been made for use in the chemical laboratory. There are many different kinds of funnels that have been adapted for these specialized applications. Filter funnelsthistle funnels (shaped like thistle flowers), and dropping funnels have stopcocks which allow the fluids to be added to a flask slowly. For solids, a powder 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 latter two may be replaced with a sintered glass frit.

Separatory funnels are used in liquid-liquid extractions.


Glass is the material of choice for laboratory applications due to its inertness compared with metals or plastics. However, plastic funnels made of nonreactive polyethylene are used for transferring aqueous solutions. Plastic is most often used for powder funnels which do not come into contact with solvent in normal use.

[edit]The types of funnels in the laboratory

A funnel for hot filtration

·         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]

·         Powder funnels have a small and wide neck for fast pouring of powders.

·         Separatory funnels are pear-shaped, have a cap and a short neck, with a stopcock for the even pouring of fluids. These are used to decant two immiscible fluids. It can be graduated, though this is not very common.

·         Hirsch funnels are shaped much like normal funnels, but contain holes or sintered glass at the base for quick filtrations.

·         Dropping funnels are a cylindrical, regularly graduated funnel with standard taper ground glass joints. These are often supplied with a pressure equalizer.

·         Buchner funnels are made of porcelain and include a plate of sintered glass or perforated porcelain. These are used in filtration under low pressure with aBuchner flask.[2]

·         Hot filtration funnel is a less commonly seen funnel where the funnel is jacketed, and surrounded by a heated fluid.[3]


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