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 8 ECO FUNNEL W/53MM SCREW CAP
8 in. SAFETY ECO FUNNEL FOR LIQUID WASTE COLLECTION, FITS 53MM SCREW CAP BOTTLES, PREVENTS 99.9% EMISSIONS OF TOXIC FUMES, HDPE, RED LID WITH GASKET THAT LATCHES, REMOVABLE FILTER FOR LARGE PARTICLES, 2000 ML CAPACITY, LIQUID LEVEL TUBE FOR PREVENTING OVERF
California Pacific Lab & Consulting FUNNEL SAFETY HAZARDOUS
8 in. Eco Funnel, Closure Size: 38mm-430, Mouth: 8 in., Suitable for a Common 4L Bottle, (Including Old 4L Glass Solvent Bottles)
Cole-Parmer Utility Funnel Assortment Pack, 3/pk; 5ml, 25ml, 40ml
Polypropylene funnels have eight internal ribs to facilitate filtration. Autoclavable.
MSC New Pig Drum Funnel, Polypropylene, 30 & 55 gal Drums, Burpless
The New Pig drum funnel features a burpless design for fast, smooth liquid transfer into 30 and 55 gallon drums without splashback. Constructed from thick-wall polypropylene, it offers excellent resistance to UV rays, rust, corrosion, and most chemicals. It includes a ridged interior for a level draining surface and a built-in debris strainer to capture large particles.
- Burpless design vents during pouring for fast, smooth flow with no dangerous splashback.
- Thick-wall construction resists UV rays, rust, corrosion and most chemicals.
- Ridged interior creates a level draining surface for containers and enables faster draining.
- Built-in debris strainer captures large particles.
Ace Glass, Inc. 100mL power dispensing funnel
100mL power dispensing funnel with side-operated screw feed instrument for addition of powders and solids, up to 25 mesh, to reactions without problems of seizing or binding. Features a flexible PTFE screw thread wrapped on a precision PTFE-ceramic shaft, and contained within a precision-bore housing. Completely inert materials allow flushing with solvents without fear of contamination. #15 Ace-Thred offers easy disassembly for cleaning. Large 11/4 knob for smooth and easy turning. 24/40 top female and bottom male joints. 14/20 joint atop inner male joint for easier cleaning.
Chemglass Life Sciences 150mm Powder Funnel, Modified, 24/40 Inner Joint, 45mm Flat Sided
150mm Powder Funnel, Modified, 24/40 Inner Joint, 45mm 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 Chemglass 100 mm Fluted Glass Funnel, 60° Angle, Short Stem - Case of 12
This 100 mm fluted glass funnel is designed for laboratory filtration and transfer tasks where faster flow and reduced clogging are required. The 60° fluted cone and depressed inside flutings promote efficient filtering, and the short stem provides compact handling in crowded setups.
- Material: PYREX glass.
- Size (top ID): 100 mm.
- Angle: 60° cone.
- Stem type: short stem for compact use.
- Design: fluted with depressed inside flutings to decrease filtering time.
- Pack quantity: case of 12 (CS12).