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
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.
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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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.
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.
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.
Thermo Scientific™ Nalgene™ Polypropylene Analytical Funnels
Use standard filter papers with these funnels, featuring long stems and external ribbing that eliminates air lock.
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.
Promotions are available
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 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.
Promotions are available
Fisherbrand™ PTFE Funnel
Includes a super smooth non-stick internal surface. the PTFE funnel is chemically resistant and inert.
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.
Thermo Scientific™ Nalgene™ Heavy-Duty LDPE Funnels
Avoid breakage and corrosion with these heavy-duty funnels, the toughest large funnels available.
Promotions are available
Thermo Scientific™ Nalgene™ Utility Funnels
Replace glass lab funnels with these utility funnels, which are an excellent shatter-proof alternative.