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
California Pacific Lab & Consulting FUNNEL SAFETY HAZARDOUS
Eco Funnel System, System Includes : 8 in. Eco Funnel, 4L Polyethylene Container, Secondary Container and Base, 38-430 Screw Cap
Cole-Parmer Scienceware H14660-0065 polypropylene powder funnel, 70 mL
Polypropylene funnels have 60°> wall incline. Use for transferring powders. Parallel stem minimizes bridging of powder. Bel-Art.
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, 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).
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.
Chemglass Life Sciences Chemglass Small Polypropylene Process Reactor Funnel, 4.3 L, 260 mm Top, 80 mm Flange
Small polypropylene funnel designed for process reactor and powder transfer applications. It features a wide 260 mm top opening, an 80 mm reaction flange, and a 4.3 L capacity suitable for moderate batch operations.
- Polypropylene construction for chemical resistance and durability.
- 4.3 L capacity for handling moderate volumes.
- 260 mm top diameter for wide-mouth filling.
- 80 mm reaction flange for secure reactor connection.
- Handle at rim for easier positioning and pouring.
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
Chemglass Life Sciences Funnel, Powder, PTFE, 33mm Diameter, Stem 10mm, 50mm Height
PTFE powder funnel is totally chemically inert with super smooth non-stick internal finish.Virgin grade PTFE conforming to FDA and USP Class VIChemical Resistance is virtually total.Temperature Range, -200°C to 260°C (-328°F to 500°F).Shelf life is considered indefinite within the confines of normal use and storage conditions.Autoclavable
California Pacific Lab & Consulting CALIFORNIA PACIFIC LAB & CONSULTING
NC3960662 ECO FUNNEL 4IN SYSTEM
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.