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 ECO FUNNEL 8 ECO FUNNEL WITH
NC3866206 ECO FUNNEL 8 ECO FUNNEL WITH
Chemglass Life Sciences 100mm Powder Funnel, 24/40 Inner Joint
100mm 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 75mm Powder Funnel, 24/40 Inner Joint, 165mm OAL
75mm Powder Funnel, 24/40 Inner Joint, 165mm 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.
Ace Glass, Inc. 100mm powder funnel with 29/32 inner joint
100mm powder funnel with 29/32 inner joint is useful in pouring powders or liquids into ground joint containers.
Foxx Life Sciences Autofil 2 Bottle Top Vacuum Filtration unit, Funnel Only, 1000 mL, 0.22 µm PES Membrane, Sterile, 12/CS
The Autofil 2 Bottle Top Vacuum Filter Funnel Only features 0.1um, 0.2um, or 0.45um PES membranes. Perfect for filtering FBS and other viscous solutions. The membrane is low protein binding and surfactant-free.
Features
Available in 250ml, 500ml and 1000ml. Funnel is compatible with GL 45 thread bottles
Bottle top Filter units include adapter for connecting to vacuum hose
Design includes the NEW EZLabpure™ ergonomic bottle shape with molded finger grip
GL 45 caps provides a convenient gripping surface
All units are sterile and manufactured from USP Class VI polystyrene in an ISO 13485 clean room
Chemglass Life Sciences 101mm Powder Funnel, Polypropylene, 24/40 Joint Size
101mm Powder Funnel, Polypropylene, 24/40 Joint Size. Polypropylene funnel having 60º angled sides and a standard taper inner joint.
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.
Ace Glass, Inc. Funnel, powder, flat side, 29/32, 145mm OD opening, 215mm height above the joint
Funnel, powder, flat side, 29/32, 145mm OD opening, 215mm height above the joint
Ace Glass, Inc. Funnel, powder, flat side, 14/20, 50mm OD opening, 70mm height above the joint
Funnel, powder, flat side, 14/20, 50mm OD opening, 70mm height above the joint
Ace Glass, Inc. 125mm powder funnel with 35/45
125mm powder funnel with 35/45 inner joint is useful in pouring powders or liquids into ground joint containers.
California Pacific Lab & Consulting ECO FUNNEL 8 ECO FUNNEL WITH
NC3866205 ECO FUNNEL 8 ECO FUNNEL WITH