Filling Funnels
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
Fisherbrand™ Soda Lime Glass Funnel
Plain glass funnel manufactured from soda lime glass. Fisherbrand™ Soda Lime Glass Funnel is ideal for use with funneling liquids in laboratory applications.
BRAND™ Plain Interior Polypropylene Funnels
An excellent option with high temperature resistance for general laboratory use.
Fisherbrand™ Borosillicate Glass Funnel
Plain glass funnel manufactured from borosilicate glass. Fisherbrand™ Borosilicate Glass Funnel is ideal for use with funneling liquids in laboratory applications.
Fisherbrand™ PTFE Funnel
Includes a super smooth non-stick internal surface. the PTFE funnel is chemically resistant and inert.
Kartell™ HDPE General Purpose Funnels
Manufactured from HDPE for optimum strength and chemical resistance. Kartell™ HDPE General Purpose Funnels provide safety and precision in filling bottles in the laboratory.
Buerkle™ PP/PE Plastic Barrel Funnels
All-purpose funnels with suspension eyelet for safe filling of containers.
Vitlab™ Transparent Polypropylene Funnel
Use these funnels for a variety of bottling and decanting applications in the food industry. VITLAB™ Transparent Polypropylene Funnels feature a practical handle with loop for hanging. Ideal for powders and liquids.
Thermo Scientific™ Nalgene™ Large HDPE Funnels
Choose a safer alternative to glass with this shatterproof funnel, featuring external and internal ribbing for air release.
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Scientific Glass Labs™ Borosilicate Glass Powder Funnel
Manufactured from borosilicate glass. Scientific Glass Labs™ Borosilicate Glass Powder Funnel is less likely to clog or cake when funneling powdery substances.
BRAND™ Polypropylene Powder Funnels
Constructed of durable, lightweight polypropylene. Brand™ Polypropylene Powder Funnels are an excellent option for the transfer of samples without flow rate restrictions.
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Fisherbrand™ Soda Glass Funnel
Use the Fisherbrand™ Soda Glass Funnel to funnel liquids for laboratory applications. the funnel is manufactured from clear soda lime glass and has a stem that measures 40mm.
Nickel Electro™ Stainless Steel Funnels
This durable stainless steel funnel, break-resistant, stain proof and easy to clean makes it an ideal choice for most laboratory and research environments.
BRAND™ Borosilicate Glass Funnel
Manufactured from borosilicate glass. BRAND™ Borosilicate Glass Funnel includes a ground or fire-polished upper rim. Short stem provides optimal filtration. Angled at 60°C.
DWK Life Sciences DURAN™ Analytical Funnel, for quick filtration
The analytical funnel has a plug in its receiver which prevents the filter paper from sticking, thus enabling rapid filtration.