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
Foxx Life Sciences Borosil Funnels with 60 Angle Bowls and 50mm Stems, Medium (M), 20/CS
Borosil Short Stem Funnels are built for durability & long-term use. Funnels have 60 bowl angles for perfect fit with filter papers. Used for filtration & decanting of a wide variety of liquids. Built from Borosil's world-renowned 3.3 borosilicate, low-expansion, chemically resistant glass. Avail. in a variety of sizes from 25mm diameter (XS, Extra Small) to 100mm diameter (XXL, 2X-Extra Large). Borosil Short Stem Funnels comply with DIN/ISO 4798. In collaboration with Borosil Glass Works, Foxx Life Sciences is proud to bring the outstanding quality of Borosil Type 3.3 Borosilicate glassware to North America for the first time. Manufactured from the same USP Type 1 borosilicate glass that North American scientists have come to trust Borosil Laboratory Glassware offers unparalleled mechanical strength, clarity & reliability at competitive prices. And thanks to a unique annealing process, Borosil Glassware is stress-free & incredibly resistant to thermal shock.
Foxx Life Sciences Borosil Funnels with 60 Angle Bowls and 100mm Stems, 2X-Extra Large (XXL), 40/CS
Borosil Short Stem Funnels are built for durability & long-term use. Funnels have 60 bowl angles for perfect fit with filter papers. Used for filtration & decanting of a wide variety of liquids. Built from Borosil's world-renowned 3.3 borosilicate, low-expansion, chemically resistant glass. Avail. in a variety of sizes from 25mm diameter (XS, Extra Small) to 100mm diameter (XXL, 2X-Extra Large). Borosil Short Stem Funnels comply with DIN/ISO 4798. In collaboration with Borosil Glass Works, Foxx Life Sciences is proud to bring the outstanding quality of Borosil Type 3.3 Borosilicate glassware to North America for the first time. Manufactured from the same USP Type 1 borosilicate glass that North American scientists have come to trust Borosil Laboratory Glassware offers unparalleled mechanical strength, clarity & reliability at competitive prices. And thanks to a unique annealing process, Borosil Glassware is stress-free & incredibly resistant to thermal shock.
Chemglass Life Sciences Chemglass 12 mm PTFE Stem, Replacement for Chem-Drain Valve
Replacement PTFE stem for 12 mm drain valves, intended for use as a spare or repair part to restore sealing and flow control in Chem-Drain style valve assemblies. Manufactured from PTFE for broad chemical resistance and smooth operation, the stem is sized to fit 12 mm valve assemblies and permits drainage of particulate-laden solutions.
- 12 mm stem diameter for standard 12 mm drain valve assemblies.
- PTFE material provides excellent chemical resistance and low friction.
- Permits drainage of liquids and solids up to 2 mm in diameter.
- Designed for use as a replacement or spare stem for repair and maintenance.
- Simple installation; compatible with valve bodies where PTFE components are supported.
Chemglass Life Sciences 150mm Powder Funnel, 45/50 Inner Joint
150mm Powder Funnel, 45/50 Inner Joint. Useful for the introduction of solids or liquids into reactions under atmospheric conditions. Funnels have 60º side angle and a standard taper inner joint.
Chemglass Life Sciences 50mm Powder Funnel, Modified, 14/20 Inner Joint, 15mm Flat Sided
50mm Powder Funnel, Modified, 14/20 Inner Joint, 15mm Flat Sided. Similar to CG-1720, but with one side flattened to allow funnel to be used in multi-neck flasks where space is limited. Flat side dimension is the distance between the center of the standard taper inner joint and the flattened side of the funnel. Funnels have 60º angled sides with a standard taper inner joint.
BURKLE INC Funnel, stainless steel, V2A, outer-Ø 2.36 in. (60 mm)
The rugged stainless steel filling funnel makes it easy to fill and transfer free-flowing powders, liquids and low-viscosity media. With an air vent on the discharge tube, it provides complete and unobstructed flow for efficient handling of a wide variety of materials.
The larger versions of the feed hopper are also equipped with a handle, which not only increases safety when handling larger fill quantities, but also improves usability in industrial environments.
Chemglass Life Sciences 150mm Powder Funnel, 24/40 Inner Joint
150mm Powder Funnel, 24/40 Inner Joint. Useful for the introduction of solids or liquids into reactions under atmospheric conditions. Funnels have 60º side angle and a standard taper inner joint.
Chemglass Life Sciences 50mm Powder Funnel, 14/20 Inner Joint
50mm Powder Funnel, 14/20 Inner Joint. Useful for the introduction of solids or liquids into reactions under atmospheric conditions. Funnels have 60º side angle and a standard taper inner joint.