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
Eisco™ Glass Jointed Powder Funnels
Ideal for transferring powder reagents between pieces of labware. Eisco™ Glass Jointed Powder Funnels feature ground joints to ensure tight connections with other pieces of glassware.
United Scientific™ Glass Funnels with Long Stem
Glass Funnel featuring a crystal clear finish to allow you to see your sample easier.
United Scientific™ Polypropylene Funnels with Standard Stem
Funnels offering high quality at extraordinary value.
United Scientific™ Polypropylene Industrial Funnels
Funnels offering high quality at extraordinary value.
United Scientific™ Polypropylene Utility Funnels
Funnels offering high quality at extraordinary value.
United Scientific™ Polyethylene Powder Funnel
Funnel that offers high quality at extraordinary value.
DWK Life Sciences Kimble™ ValueWare™ 58° Addition Funnels
Fire polished long stems for long service life.
Bel-Art™ Urbanti™ High-Speed Filter Funnels
Optimized for nonvacuum, high-speed filtration, these glass-clear funnels have internal helicoid ribs to increase the filtration speed.
Bel-Art™ Long-Stem Funnel
For use with tall flasks or containers.
Dynalon™ Utility Funnels
Lightweight funnels are inexpensive and great for general use.
Dynalon™ Student Funnel Set
Ideal for numerous general-purpose applications in the school labs
Dynalon™ Analytical Funnels
Long, narrow bore that works best for liquids
Cytiva (Formerly Pall Lab) 47 mm Filter Funnels, Glass - Fritted glass support base with sidearm (1/pkg)#N/A
The 47 mm glass filter funnels are made of 100% borosilicate glass and they offer excellent chemical compatibility even with the most aggressive solvents.-Borosilicate glass-Chemical compatibility-Ideal for filtration and degassingThe glass filter funnels are ideal for filtration and degassing of HPLC solvents, aqueous mobile phase solutions, and buffers.Ordering information: Materials of Construction: All parts are borosilicate glass except for the clamp and the stopper. The clamp is made of aluminum. The number 8 stopper is made of silicone. This product is not approved for use in medical, clinical, surgical or other patient applications.
Wilmad Labglass FUNNEL PWDR 150MM 45/50
Funnel Powder. Approximate Top Diameter: 150mm; Joint Size: [ST] 45/50 Inner. For introduction of liquids or powders into containers having the same size standard taper joint.
Cole-Parmer Disposable PP Vented Utility Funnel, 50 mL, 100/Bag
Disposable polypropylene funnels are vented to prevent air lock.