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
Ace Glass, Inc. Funnel, powder, flat side, 71/60, 255mm OD opening, 300mm height above the joint
Funnel, powder, flat side, 71/60, 255mm OD opening, 300mm height above the joint
Ace Glass, Inc. Funnel, heavy wall glass, angled, 45/50 joint, 190mm ODx325mmlength
Funnel, heavy wall glass, angled, 45/50 joint, 190mm ODx325mmlength
Ace Glass, Inc. 150mm powder funnel with 29/42 inner joint
150mm powder funnel with 29/42 inner joint is useful in pouring powders or liquids into ground joint containers.
Foxx Life Sciences FOXX APEX™ Sterile Disposable Bottle Top Filters with 0.45 µm PALL PES Membrane for Prefiltration or Clarification, 1000 mL, 24/CS
The FOXX APEX ™ Bottle-Top Filter Funnel Only Assembly is a sterile, single-use disposable vacuum-driven lab filtration unit for high-throughput, high-capacity work. Designed in USA and made in an ISO 13485-certified cleanroom with USP Class VI materials, it delivers fast flow, low hold-up volume, and minimal protein adsorptionideal for cell/tissue culture filtration, media preparation filters, and bioprocessing.
Features
PES membrane for fast, high-throughput filtration and low protein binding
Available pore sizes: 0.1 m for mycoplasma removal; 0.22 m for sterile media/reagent filtration; 0.45 m for clarification/debris removal
Gamma sterilized (SAL 10), non-pyrogenic, and individually packaged
Accessory: Patented holder options including low-profile pedestal base (1116-RLS) and ring-stand cradle (1122-RLS)both enabling hands-free vacuum filtration, leak-proof connection, and reduced contamination risk in tissue culture hoods
Chemglass Life Sciences Funnel, Powder, 50mm, 14/20 Outer
Funnel, Powder, 50mm, 14/20 Outer. Powder funnel is useful for the introduction of solids or liquids into reactions under atmospheric conditions. Funnels have 60 side angle and a standard taper outer joint.
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.
Ace Glass, Inc. 100mm powder funnel with 24/29 inner joint
100mm powder funnel with 24/29 inner joint is useful in pouring powders or liquids into ground joint 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.
US Plastic Corporation 16 oz. Polyethylene Funnel - 5" Dia. x 6-1/4"H
These polypropylene and high density polyethylene funnels have many uses. They are inexpensive, lightweight, and durable. They have numerous general applications in the laboratory. The 6-3/8" size has a large throat opening for quick transfer of materials.
Bellco Glass, Inc. Aseptic Fill Bell,100mm
Manufactured from Type 1 Class A Borosilicate Glass. Ideal for use of filling other glass vessels. Receiving vessel is placed under bell to maintain aseptic conditions during filling. Attaches to reservoir with rubber tubing. MADE IN THE USASpecifications:Type 1 Class A Borosilicate GlassDimensions: 104x130mmTubing Size: 1/2″2 per case