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
BURKLE INC Funnel, stainless steel, V2A, outer-Ø 11.81 in. (300 mm)
The rugged 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 tube, it provides complete and unobstructed flow for efficient handling of a wide variety of materials.
The larger versions of the feed hopper are also equipped with a handle, which not only increases safety when handling larger fill quantities, but also improves usability in industrial environments.
BURKLE INC Funnel, stainless steel, V2A, outer-Ø 3.94 in. (100 mm)
The rugged 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 tube, it provides complete and unobstructed flow for efficient handling of a wide variety of materials.
The larger versions of the feed hopper are also equipped with a handle, which not only increases safety when handling larger fill quantities, but also improves usability in industrial environments.
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
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 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.
Cole-Parmer Essentials Stainless Steel Funnel, 13 oz
Cole-Parmer Stainless Steel Funnel, 13 oz, Cole-Parmer stainless steel funnels are a laboratory supply you will count on for years of use. Stay in stock with our selection of medium gauge, 304 stainless steel funnels in various capacities and overall sizes.
Chemglass Life Sciences Chemglass disposable filter funnel, 150 mL, straight top - polypropylene funnel with polyethylene frit and 7.0 g silica gel (30/Case)
Disposable filter funnel designed for rapid solid-liquid separation in chemistry and life-science laboratories. The polypropylene funnel features a polyethylene frit and contains 7.0 g of silica gel; the 80 mm stem helps prevent contamination of glass vacuum adapters during vacuum-assisted filtration. Sold bulk-packed in cases of 30 for high-throughput workflows.
- Disposable polypropylene funnel with polyethylene frit
- 150 mL capacity
- Contains 7.0 g silica gel per funnel
- 80 mm stem to reduce adapter contamination
- Straight top funnel design
- Bulk-packed, 30 per case
- Intended for solid-liquid separation and vacuum filtration
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
Sigma Aldrich Fine Chemicals Biosciences BRAND FUNNEL SHORT STEM- GLASS
NC3848481 BRAND FUNNEL SHORT STEM- GLASS
Bellco Glass, Inc. Aseptic Fill Bell,50mm
Manufactured from Type 1 Class A Borosilicate Glass. Ideal for use of filling other glass vessels. Receiving vessel is placed under bell to maintain aseptic conditions during filling. Attaches to reservoir with rubber tubing. MADE IN THE USASpecifications:Type 1 Class A Borosilicate GlassDimensions: 49x100mmTubing Size: 1/2″2 per case
Bellco Glass, Inc. Aseptic Fill Bell,70mm
Manufactured from Type 1 Class A Borosilicate Glass. Ideal for use of filling other glass vessels. Receiving vessel is placed under bell to maintain aseptic conditions during filling. Attaches to reservoir with rubber tubing. MADE IN THE USASpecifications:Type 1 Class A Borosilicate GlassDimensions: 70x125mmTubing Size: 1/2″2 per case