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
BRAND™ Plain Interior Polypropylene Funnels
An excellent option with high temperature resistance for general laboratory use.
Thermo Scientific™ Nalgene™ Polypropylene Powder Funnels
Transfer powders with these powder funnels. Parallel stem minimizes bridging of powder and external ribbing prevents air locks. A shatter-proof alternative to glass.
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.
Thermo Scientific™ Nalgene™ Polypropylene Analytical Funnels
Use standard filter papers with these funnels, featuring long stems and external ribbing that eliminates air lock.
Cole-Parmer™ Stainless Steel Funnel
Stainless steel funnels are a laboratory supply you will count on for years of use.
BRAND™ Borosilicate Glass Powder Funnel
Manufactured from borosilicate glass. BRAND™ Borosilicate Glass Powder Funnel includes ground and fire-polished upper rim. Short, wide stem is optimal for funneling powder and other ground materials.
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.
Azlon™ Industrial HDPE Funnel
Constructed of Polyethylene and unbreakable in normal use. Azlon™ Industrial HDPE Funnels are suitable for food contact applications in accordance with EU and USA regulations. Feature straight sided upper rims to prevent spillage.
BRAND™ Standard Ground Joint Funnel
Half-round body
Buerkle™ Funnel, Stainless Steel
The Funnel, stainless steel can be used to pour and transfer free-flowing powders, liquids and slightly viscous media easily. The sturdy stainless steel funnel can be used in a wide variety of applications.
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.
Pyrex™ Glass Funnel with Stem
Manufactured from chemically resistant Pyrex™ borosilicate glass. Pyrex™ Glass Funnel with Stem is ideal for transferring powders. Include a short, wide stem for smooth flow.
Fisherbrand™ Soda Lime Glass Short Stem Funnel
Manufactured from soda lime glass. Fisherbrand™ Soda Lime Glass Short Stem Funnel is less likely to clog when funneling thicker substances.
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.