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
DWK Life Sciences KIMBLE™ KIMAX™ Filling Funnels
KIMBLE™ KIMAX™ Filling Funnels are made from 33 expansion borosilicate glass with fire-polished edges to reduce chipping. Clear glass construction allows easy visual monitoring during filling operations in laboratory environments.
DWK Life Sciences WHEATON™ 25 mm Filtration Assemblies and Accessories
WHEATON™ 25 mm Filtration Assemblies and Accessories offer a versatile range of components for microfiltration applications. Select from glass funnels, fritted supports, and complete assemblies designed for reliable sample filtration in laboratory environments.
DWK Life Sciences KIMBLE™ KIMAX™ Long Stem 60° Angle Addition Funnels
KIMBLE™ KIMAX™ Long Stem 60° Angle Addition Funnels offer high resistance to chemical attack, mechanical and thermal shock. Constructed with heavy uniform walls and strong, fire polished rims and stems for long service life.
DWK Life Sciences KIMBLE™ KONTES™ Polypropylene Solvent Addition Funnels (Set of Five)
KIMBLE™ KONTES™ Polypropylene Solvent Addition Funnels (Set of Five) enable gentle addition of solvent to chromatography columns. The unique closed-end design and perforated stem prevent disturbance of the silica gel bed. Unbreakable polypropylene construction.
DWK Life Sciences KIMBLE™ KONTES™ Powder Funnels
KIMBLE™ KONTES™ Powder Funnels are designed for the addition of reactants to a variety of flasks. Featuring a 29/42 standard taper joint, these glass powder funnels offer reliable compatibility with standard laboratory glassware.
DWK Life Sciences KIMBLE™ KONTES™ Powder Funnels
KIMBLE™ KONTES™ Powder Funnels are useful for the addition of reactants to a variety of flasks. Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.
DWK Life Sciences DURAN™ Funnels with Short Stem
DURAN™ Funnels with Short Stem are made from borosilicate glass offering excellent thermal shock and chemical resistance, making them suitable for use with hot or aggressive media in laboratory applications.
DWK Life Sciences WHEATON™ 47mm Glass Filtration Assembly
WHEATON™ 47mm Glass Filtration Assembly is designed for analysis of particulate or microbiological contamination. Glass components conform to USP Type I and ASTM E 438 Type I, Class A requirements, ensuring ultra-clean filtrate for viscous or proteinaceous solutions.
Corning™ Plain Reusable Short Stem Plastic Funnels
Durable polypropylene funnels are translucent and allow safe and easy transfers of solids or liquids from one vessel to another.
Corning™ PYREX™ Funnel for Sugar Analysis
Molded construction with bottom ground flat and beaded rim
Corning™ PYREX™ 60° Angle Fluted Funnel, Short Stem
Useful in clinical and hospital labs; can be used in flasks or tubes without racks
Corning™ PYREX™ Plain Diameter 60° Angle Funnel with Long Wide Stem
Bowls and funnels made from hand-blown blanks having approximately 60°angle
Corning™ PYREX™ Plain Diameter 60° Angle Funnel with Short Wide Stem
Beaded rims reduce chipping