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, 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 Disposable Filter Funnel, 18 mL, Polyethylene Frit with 500 mg Diatomaceous Earth (Shelf Pack)
Chemglass disposable filter funnel (18 mL) is a single-use filtration device for solid-liquid separations in chemistry and biological laboratories. It uses a polyethylene frit charged with diatomaceous earth to provide consistent filtration and is supplied in a shelf-pack tray for convenient storage and handling.
- 18 mL nominal volume.
- Polyethylene frit loaded with 500 mg diatomaceous earth for consistent filtration performance.
- 80 mm stem length to minimize contamination of vacuum adapters.
- Shelf-pack, shrink-wrapped SBS-coated white tray for convenient handling and storage.
- Compatible with standard glass vacuum adapters and PTFE stopcock for controlled vacuum filtration.
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.
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.
Chemglass Life Sciences 100mm Powder Funnel, Modified, 24/40 Inner Joint, 35mm Flat Sided
100mm Powder Funnel, Modified, 24/40 Inner Joint, 35mm 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 150mm Powder Funnel, Modified, 45/50 Inner Joint, 45mm Flat Sided
150mm Powder Funnel, Modified, 45/50 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.
California Pacific Lab & Consulting FUNNEL SAFETY HAZARDOUS
Eco funnel, w/fS-70 screw cap, 8 in., Made of HDPE and has an easy use lid, gasket, positive latch, filter, and an 11 ft. stem to effectively reduce chemical evaporation of hazardous solvents in the lab, 1750mL
Chemglass Life Sciences Funnel, Powder, PTFE, 158mm Diameter, Stem 24mm, 200mm Height
PTFE powder funnel is totally chemically inert with super smooth non-stick internal finish.Virgin grade PTFE conforming to FDA and USP Class VIChemical Resistance is virtually total.Temperature Range, -200°C to 260°C (-328°F to 500°F).Shelf life is considered indefinite within the confines of normal use and storage conditions.Autoclavable
Chemglass Life Sciences Filling Bell, Aseptic, 104mm ID, 130mm OAH
Filling Bell, Aseptic, 104mm ID, 130mm OAH. For aseptic filling of vessels. Tubing is attached to the serrated hose connection while the receiving vessel is placed inside the bell. Made from Type 1 Class A borosilicate glass.
California Pacific Lab & Consulting 8IN ECO FUNL 2IN NPT CRSE THRD
8 in. SAFETY ECO FUNNEL FOR LIQUID WASTE COLLECTION, FITS 2 NPT COARSE THRD DRUM BUNG, 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 TO PREVENT OV
California Pacific Lab & Consulting 4IN ECO FUNNEL
Eco funnel, 4 in. dia. w/53B screw cap, Made of HDPE and has an easy use lid, gasket, positive latch, filter, and an 11 in. stem to effectively reduce chemical evaporation of hazardous solvents in the lab, 250mL
Hach Company Funnel-Powder-65 mm Top ID
Polypropylene funnel for easy transfer of powders into narrow-necked flasks tubes or vials
