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. 100mm powder funnel with 35/25 inner joint
100mm powder funnel with 35/25 inner joint is useful in pouring powders or liquids into ground joint containers.
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.
Ace Glass, Inc. Funnel, heavy wall glass, angled, 24/40 joint, 100mm ODx140mmlength
Funnel, heavy wall glass, angled, 24/40 joint, 100mm ODx140mmlength
US Plastic Corporation MINI POLYPROPYLENE FUNNEL
These polypropylene and high density polyethylene funnels have many uses. They are inexpensive, lightweight, and durable. They have numerous general applications in the laboratory.
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.
Essendant TOPS Docket Gold Planner Pad Project-Management Format Medium/College Rule Black Cover 70 White 8 5x11 75 Sheets
TOPS Docket Gold Planner Pad Project-Management Format Medium/College Rule Black Cover 70 White 8 5x11 75 Sheets
Essendant GLOVESLDRV STL GLRY GRN
Supple leather gloves contain natural lanolin for an extra-soft feel Excellent tensile strength and tactile sensitivity Gloves have exceptional durability Shirred elastic back for comfort and easy fit ANSI Abrasion Resistance- Level 3 ANSI Puncture Resistance- Level 3 Anti-Vibration- No Size Type- Large
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).
Chemglass Life Sciences Funnel, Powder, PTFE, 150mm Diameter
Funnel, Powder, PTFE, 150mm Diameter. PTFE powder funnel is totally chemically inert with super smooth non-stick internal finish.
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.
Fritsch Milling And Sizing Inc Funnel 15mm, L-27
Funnel 15 mm for LABORETTE 27. Funnels are also available in 5, 15 and 22 mm dia. to suit the particle size of the sample being divided.
Fritsch Milling And Sizing Inc Funnel 5 mm for Dry Dividing, L-27
Funnel 5 mm for dry dividing for LABORETTE 27. Funnels are also available in 5, 15 and 22 mm dia. to suit the particle size of the sample being divided.
For the division of suspensions with dividing head, division ratio 1:30 a separate funnel, order no. 27.1330.16 is offered