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™ 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.
BRAND™ Plain Interior Polypropylene Funnels
An excellent option with high temperature resistance for general laboratory use.
Fisherbrand™ Heavy-Duty/Utility Funnels
Ideal for continuous lab work and heavy-duty jobs
Thermo Scientific™ Nalgene™ Large HDPE Funnels
Choose a safer alternative to glass with this shatterproof funnel, featuring external and internal ribbing for air release.
Promotions are available
Thermo Scientific™ Nalgene™ Heavy-Duty LDPE Funnels
Avoid breakage and corrosion with these heavy-duty funnels, the toughest large funnels available.
Promotions are available
Fisherbrand™ Long-Stem Analytical Funnels
Molded polypropylene with external ridges and outside ribs to prevent vapor lock
Thermo Scientific™ Nalgene™ Utility Funnels
Replace glass lab funnels with these utility funnels, which are an excellent shatter-proof alternative.
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.
Promotions are available
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.
Vitlab™ Transparent Polypropylene Large Funnels
Manufactured from polypropylene for strength and durability. VITLab™ Transparent Polypropylene Large Funnels are suitable for filling large amounts of liquids.
Buerkle™ PP/PE Plastic Barrel Funnels
All-purpose funnels with suspension eyelet for safe filling of containers.
Nickel Electro™ Stainless Steel Laboratory Funnel
Use with or without filter membranes for gravity filtration as well as simple funnel procedures. Nickel Electro™ Stainless Steel Laboratory Funnel is vented to allow complete, uninhibited flow of liquids or solids.
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.