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.
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.
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.
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.
MSC PRO-LUBE 1707005 2 Qt Capacity Polyethylene Funnel 7" Mouth OD, 1" Tip OD, Straight Spout, Red
PRO-LUBE 1707005 2 Qt Capacity Polyethylene Funnel 7" Mouth OD, 1" Tip OD, Straight Spout, Red
California Pacific Lab & Consulting 8" ECO FUNNEL,SYSTEM,10 LITER
8" ECO Funnel, System, 10 Liter, 83mm Cap adapter (83B)The 8 inch ECO Funnel with 10 Liter Waste Disposal System and 83mm screw cap features a latching lid with gasket to keep fumes contained. A removable large particle filter catches stir bars or other items. The 11" funnel stem reduces chemical evaporation, and the secondary air lock tube helps prevent over-filling.
iXCells Biotechnologies AdiposeDerived Stem Cell Attac
Adipose-Derived Stem Cell Attachment Medium - 500mL
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.