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
US Plastic Corporation 64OZ PE FUNNEL 8 1/8 D 8 H
These polypropylene and high density polyethylene funnels have many uses. They are inexpensive, lightweight, and durable. The 6-3/8 in. size has a large throat opening for quick transfer of materials.
Chemglass Life Sciences Funnel, Eco, 8" Top Diameter, Thread Size 38-430, CHEMGLASS TO ASSEMBLE PRIOR TO SHIPMENT
Funnel, Eco, 8" Top Diameter, Thread Size 38-430. Similar to CG-1759-01 except preassembled prior to shipment.
Chemglass Life Sciences Funnel, Process Reactor, Large, Polypropylene, 14.1L Capacity, 350mm Top, 80mm Flange
Funnel, Process Reactor, Large, Polypropylene, 14.1L Capacity, 350mm Top, 80mm Flange. Large funnels have a 80mm flange fused to the bottom of the funnel. This design makes them ideal for filling Chemglass's process reactors by clamping the funnel directly to the powder addition port. The wide mouth funnel has a large opening to optimize flow. The 4.3L size has a handle at the rim. Main body and flange are made from Polypropylene. Funnels are autoclavable at 121C (250F).
California Pacific Lab & Consulting ECO FUNNEL 4INTOP LATCH GAS/4L
4 in. Eco Funnel w/ Complete System, System Includes: 4 in. Eco Funnel, 4L Bottle, Secondary Container, 38mm-430 Screw Cap, Shipping Weight: 5 lb.
Cole-Parmer BrandTech Large industrial-size HDPE funnel, 12 L
Low density polyethylene (LDPE) funnels feature external ribbing for air release and have a handle tab for easy lifting. Polypropylene and high density polypropylene (HDPE) funnels are translucent and show content levels. Polypropylene funnels are autoclavahle.
Chemglass Life Sciences 4" ECO Funnel, 38-430 Thread, 1/16" HPLC Fitting, Use CG-1759-10 Waste Container
4" ECO Funnel, 38-430 Thread, 1/16" HPLC Fitting, Use CG-1759-10 Waste Container. Same as the standard 4" ECO Funnel, but with the addition of an HPLC waste hook adapter that connects to the side of the funnel eliminating the danger of dangling waste lines into bottles and containers.
Mitegen Self-Venting Funnel with Insulated Handle, For Safely Filling 5L & 10L LN2 Dewars & Dry Shippers
This Self-Venting Funnel with Insulated Handle is an essential tool designed for the safe and efficient transfer of liquid nitrogen (LN2) into dewars and dry shippers. Its unique self-venting feature allows cryogenic gas to escape rapidly during filling, preventing splash-back and ensuring a smooth, controlled flow of LN2. The ergonomically designed insulated handle provides a secure and comfortable grip, effectively protecting users from cold burns and enhancing safety during prolonged filling procedures. This funnel is particularly useful for safely transferring liquid nitrogen into 5-liter and 10-liter dry shippers and various dewars. With approximate dimensions of an 8-3/8 inch top diameter, 8-3/4 inches in height, and a 1-inch vent diameter, it offers precise fit and optimal performance. This funnel is an indispensable accessory for any laboratory requiring reliable and safe management of cryogenic liquids.
Hach Company Funnel, Micro
Ideal for micro work, filling burets, manometers, and small bottles. Steam autoclavable at 250°F (121°C).
California Pacific Lab & Consulting 4IN FUNNEL SAFETY HAZARDOUS
Eco funnel, 4 in. dia. w/38-430 screw cap. Made of HDPE and has an easy use lid, gasket, positive latch, filter, and an 11 in. stem to effectively reduce chemical evaporation of hazardous solvents in the lab, 250mL
MSC PRO-LUBE 1707001 8 oz Capacity Plastic Funnel 4-1/2" Mouth OD, 1/2" Tip OD, Straight Spout, Red
PRO-LUBE 1707001 8 oz Capacity Plastic Funnel 4-1/2" Mouth OD, 1/2" Tip OD, Straight Spout, Red
California Pacific Lab & Consulting FUNNEL SAFETY HAZARDOUS
System, Funnel; California Pacific; ECO; Made of HDPE; 8 in.; 2 in. NPT fine thread; Capacity: 2000mL; Suitable for 15, 30, 55 gal. drums; Easy use lid, gasket, and positive latch to close lid; Interior filter; 11 in. stem
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.