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
Eisco™ Plastic Powder Funnels
Eisco™ Plastic Powder Funnels are an ideal method for transferring powder reagents from one vessel to another.
Eisco™ Glass Powder Funnels
Eisco™ Glass Powder Funnels designed with 60° angle stems are ideal for transferring powder reagents.
Fisherbrand™ Reusable Glass Short-Stem Funnels
High resistance to chemical attack, mechanical, and thermal shock
Fisher Science Education™ Poly Funnel
Used for filling containers.
Fisherbrand™ Large LDPE Funnels
Large plastic funnels for transferring liquids at temperatures up to 80°C (180°F).
Thermo Scientific™ Nalgene™ Powder Funnels
Won't chip, crack or break.
Eisco™ Glass Jointed Powder Funnels
Ideal for transferring powder reagents between pieces of labware. Eisco™ Glass Jointed Powder Funnels feature ground joints to ensure tight connections with other pieces of glassware.
PYREX™ Fluted Funnel
Useful in clinical and hospital labs; can be used in flasks or tubes without racks.
DWK Life Sciences Kimble™ ValueWare™ 58° Addition Funnels
Fire polished long stems for long service life.
Kimble™ KIMAX™ Funnel 58° Angle Long Stem
Offers durable glass construction throughout
Bel-Art™ SP Scienceware™ Urbanti™ High-Speed Filter Funnels
Optimized for nonvacuum, high-speed filtration, these glass-clear funnels have internal helicoid ribs to increase the filtration speed.
Bel-Art™ SP Scienceware™ Standard Stem Funnels
Feature an exclusive filter-step internal design for speedier filtrations
Bel-Art™ SP Scienceware™ Long-Stem Funnels
For use with tall flasks or containers.
Kimble™ KIMAX™/ValueWare™ 58° Angle Short Stem Funnels
58° angle provides faster, more effective filtering.
Dynalon™ Utility Funnels
Lightweight funnels are inexpensive and great for general use.
GSC Go Science Crazy Glass Funnel
Designed specifically for buret filling.
Dynalon™ Student Funnel Set
Ideal for numerous general-purpose applications in the school labs
Glass Funnel with Vent
Heavy molded-glass funnel with vent.
Dynalon™ Analytical Funnels
Long, narrow bore that works best for liquids