Filling Funnels
Funnels have a conical shape and short, wide stems for filling bottles or transferring powders. Filling funnels typically have a 60-degree angle that permits accurate fitting of filter paper, as well as vents or flutes to reduce vacuum formation and decrease filtering time.
Filling Funnel Materials
Glass
Borosilicate glass filling funnels include a strong beaded edge that resists chipping. Their resistant structure allows for the use of various reagents and chemicals. They also have a high resistance to thermal and mechanical shock and chemical attack. Funnels made from flint glass and soda-lime glass are also available.
Plastic
Plastic filling funnels may be disposable or reusable and are made from polystyrene, polypropylene, polyethylene (LDPE or HDPE), or other resins.
Metal
Metal funnels are durable and reusable and may be constructed from a variety of metals. Each has characteristics that facilitate a particular use and purpose.
Filling funnels are available in a range of sizes and dimensions. They are typically sized based on capacity — the volume they can contain. Dimensionally, they may vary in top diameter, stem length, stem diameter, bowl angle, bowl capacity, and overall length. Filling funnels may be classified as Class A or Class B based on tolerances specified by ASTM and other standards.
What Different Types of Glass Funnels Are Available?
• General-purpose glass filling funnels for channeling, filling, and decanting liquids
• Short-stem or powder funnels to prevent the stem from clogging during the handling of fine powders
• Long-stem analytical funnels, often used with filter papers
• Fluted funnels to help reduce vacuums and facilitate more rapid filtration
• Büchner, glass-filtering, or vacuum filtration funnels made with an integral sintered glass disc for filtering precipitates or particulates without the need for filter papers. The sintered discs come in a range of pore sizes, typically from 10 to 40 μm
• Pear-shaped separatory funnels (separating or separation funnels) fitted with a stopper and a PTFE or glass stopcock for separating layered immiscible liquids in chemistry applications
• Weighing funnels to function as weighing dishes and to transfer weighed solids to other vessels
US Plastic Corporation Utility Funnel, 10-inch Top Diameter, Natural
Extra Large Funnel With Large Throat, ideal for use with powders, granular material, and viscous liquids, flexible, non-corroding, non-contaminating low density polyethylene,Large Throat Funnel 10 in. Top Dia, 1- 3/4 in. Spout OD Dia.
Chemglass Life Sciences 50mm Powder Funnel, 14/20 Inner Joint
50mm Powder Funnel, 14/20 Inner Joint. Useful for the introduction of solids or liquids into reactions under atmospheric conditions. Funnels have 60º side angle and a standard taper inner joint.
Cole-Parmer Stainless Steel Funnel, 6-3/8 oz
Cole-Parmer stainless steel funnels are a laboratory supply you will count on for years of use. Stay in stock with our selection of medium gauge, 304 stainless steel funnels in various capacities and overall sizes.
Cole-Parmer Stainless Steel Funnel, 22-1/4 oz
Cole-Parmer stainless steel funnels are a laboratory supply you will count on for years of use. Stay in stock with our selection of medium gauge, 304 stainless steel funnels in various capacities and overall sizes.
Chemglass Life Sciences Funnel, Solvent Addition, Stem 12mm OD X 75mm Long
Funnel, Solvent Addition, Stem 12mm OD X 75mm Long. Design of funnel permits addition of solvents to flash chromatography columns without disturbing the silica-gel / packing layer. Lower end of the funnel is closed and the stem has a series of small holes through which the solvent drains. Top of the funnel is 75mm (3in) in diameter with the stem size as listed.
Grainger Folding Funnel 12 oz 1/2 Dia Spout
The Funnel King Folding Spout Funnel is a polyethylene funnel with a folding spout that can be folded down for compact storage. It has a wide mouth opening and tapered body to easily guide liquids or powders into containers and features a flexible spout that folds down flat against the funnel body. This folding funnel has a 6 inch diameter mouth opening and stands 5 inches tall. It's made from durable polyethylene plastic and can hold up to 1 quart of liquid. The folding spout design allows this funnel to take up less space for convenient storage.
Chemglass Life Sciences 8" ECO Funnel, 53mm Thread, Use CG-1759-11 Waste Container
8" ECO Funnel, 53mm Thread, Use CG-1759-11 Waste Container. The 8” Eco Funnel is make of HDPE and has a 2000mL fluid capacity. Features an easy to use lid, gasket and positive latch to close the lid and maintain an airtight seal. A filter is also built into the interior to reduce the loss of magnetic stir bars and other items when emptying the contents of a vessel into the funnel. The funnel is equipped with an 11” stem to reduce chemical evaporation of hazardous solvents in the lab.