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
Chemglass Life Sciences 150mm Powder Funnel, 24/40 Inner Joint
150mm Powder Funnel, 24/40 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.
Chemglass Life Sciences 100mm Powder Funnel, 24/40 Inner Joint, 195mm OAL
100mm Powder Funnel, 24/40 Inner Joint, 195mm OAL. Useful for the introduction of solids or liquids into reactions under atmospheric conditions. Funnel has steep sides to permit free-flow of solid materials. With standard taper inner joint.
Chemglass Life Sciences 75mm Powder Funnel, Modified, 24/40 Inner Joint, 25mm Flat Sided
75mm Powder Funnel, Modified, 24/40 Inner Joint, 25mm Flat Sided. Similar to CG-1720, but with one side flattened to allow funnel to be used in multi-neck flasks where space is limited. Flat side dimension is the distance between the center of the standard taper inner joint and the flattened side of the funnel. Funnels have 60º angled sides with a standard taper inner joint.
Chemglass Life Sciences Funnel, Solvent Addition For Chromatography Column, Assorted Pack
Funnel, Solvent Addition For Chromatography Column, Assorted Pack. Unbreakable, polypropylene solvent addition funnels useful for chromatography columns. The unique closed-end design facilitates gentle addition of solvent to the column. Perforated funnel stem permits solvent to pour down the column wall without disturbing the top layer of silica gel. Convenient assortment pack consists of five funnels for use with various column sizes. Approximate dimensions are provided.
Ace Glass, Inc. 190mm powder funnel with 45/50 inner joint
190mm powder funnel with 45/50 inner joint is useful in pouring powders or liquids into ground joint containers.
Ace Glass, Inc. Funnel, powder, 60mm Duran flange bottom, wide mouth top
Borosilicate glass Powder Funnel with a 60mm Duran flange bottom and a wide-mouth top. The flange matches side ports on ACE spherical pilot plant reactor heads. The funnel is slightly angled to allow for easy pouring of material into large scale reactors. Uses a stainless steel quick-release clamp for connection to the reactor head.
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
BURKLE INC Funnel
The robust stainless steel filling funnel makes it easy to fill and transfer free-flowing powders liquids and low-viscosity media With an air vent on the discharge pipe it ensures complete and unobstructed flow for efficient handling of a wide range of materials
BURKLE INC Funnel
The robust stainless steel filling funnel makes it easy to fill and transfer free-flowing powders liquids and low-viscosity media With an air vent on the discharge pipe it ensures complete and unobstructed flow for efficient handling of a wide range of materials
Chemglass Life Sciences 100mm Powder Funnel, Offset, 29/42 Inner Joint, C to C Offset is 45mm
100mm Powder Funnel, Offset, 29/42 Inner Joint, C to C Offset is 45mm. Funnel has a lower stem made with an offset to permit use with multi-neck flasks.
Chemglass Life Sciences Funnel, Process Reactor, Small, Polypropylene, 4.3L Capacity, 260mm Top, 60mm Flange
Funnel, Process Reactor, Small, Polypropylene, 4.3L Capacity, 260mm Top, 60mm Flange. Large funnels have a 60mm 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, 75mm, 24/40 Outer
Funnel, Powder, 75mm, 24/40 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.
Bellco Glass, Inc. Manufactured from Type 1 Class A Borosilicate Glass. Ideal for use of filling other glass vessels. Receiving vessel is placed under bell to maintain sterility during filling. Attaches to reservoir with rubber tubing. Dimensions: 22x75mm Tubing siz
Manufactured from Type 1 Class A Borosilicate Glass. Ideal for use of filling other glass vessels. Receiving vessel is placed under bell to maintain sterility during filling. Attaches to reservoir with rubber tubing. Dimensions: 22x75mm Tubing siz