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™ Borosillicate Glass Funnel
Plain glass funnel manufactured from borosilicate glass. Fisherbrand™ Borosilicate Glass Funnel is ideal for use with funneling liquids in laboratory applications.
Thermo Scientific™ Nalgene™ Utility Funnels
Replace glass lab funnels with these utility funnels, which are an excellent shatter-proof alternative.
Karl Hecht™ HDPE Funnels
Manufactured from HDPE for optimum strength and chemical resistance.
Kartell™ Transparent Polypropylene Powder Funnels
Manufactured with polypropylene for strength and durability. Kartell™ Transparent Polypropylene Powder Funnels are designed to funnel large quantities of powders or other solid or liquid materials without flow rate restrictions, powder segregation or bridging.
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.
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™ 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.
BRAND™ Plain Interior Polypropylene Funnels
An excellent option with high temperature resistance for general laboratory use.
BRAND™ Fluted Interior PP Funnels
External flutings allow air to escape during filtration.
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.
Thermo Scientific™ Nalgene™ Heavy-Duty LDPE Funnels
Avoid breakage and corrosion with these heavy-duty funnels, the toughest large funnels available.
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Brand™ Plain Interior Polypropylene Funnels
An excellent option with high temperature resistance for general laboratory use.
Vitlab™ Transparent Polypropylene Powder Funnel
Use these funnels for a variety of bottling and decanting applications in the food industry. VITLAB™ Transparent Polypropylene Powder Funnels feature a short, wide stem. Ideal for transfer of powdered and granular substances.
BRAND™ Polypropylene Funnel with Internal Fluting
Polypropylene Funnel with internal fluting and a short, wide stem.