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 Disposable liquid funnel PS, Ø 3.94 in. (100 mm), white
Disposable funnel for reliable filling of liquids, ideal for filling bottles and other containers with a narrow filler opening.
The disposable funnel ensures no loss when transferring liquid samples or free-flowing solids. That makes this practical and hygienic pouring aid a helpful accessory for sampling or in laboratories.
Clean room produced funnel with suspension eye and venting fins for ventilation to ensure uniform flow while pouring.
In combination with a filter paper the disposable funnel is also well suited for filtering.
Ace Glass, Inc. 150mm powder funnel with 29/42 inner joint
150mm powder funnel with 29/42 inner joint is useful in pouring powders or liquids into ground joint containers.
Chemglass Life Sciences Filling Bell, Aseptic, 49mm ID, 100mm OAH
Filling Bell, Aseptic, 49mm ID, 100mm 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.
US Plastic Corporation 64OZ PE FUNNEL 8 1/8 D 8 H
These polypropylene and high density polyethylene funnels have many uses. They are inexpensive, lightweight, and durable. The 6-3/8 in. size has a large throat opening for quick transfer of materials.
Hach Company Funnel, Analytical, 65 mL Approximate Volume
Standard long stem funnel meets the needs of a wide variety of applications. Mounded ribbing prevents "air lock" commonly occurring during funneling and filtrations. A steep, 58-degree cone slope makes for fast and easy flow of either liquids or small solids. Polypropylene construction is resistant to chemicals and makes this funnel fully autoclavable for sterilization.
California Pacific Lab & Consulting FUNNEL SAFETY HAZARDOUS
Funnel, HDPE; California Pacific; ECO; Made of HDPE; Capacity: 2000mL; 8 in.; Cap size: 83mm; Suitable for 10L carboy; Easy use lid, gasket, and positive latch; Interior filter; 11 in. stem
Foxx Life Sciences Borosil Funnels with 60 Angle Bowls and 100mm Stems, 2X-Extra Large (XXL), 40/CS
Borosil Short Stem Funnels are built for durability & long-term use. Funnels have 60 bowl angles for perfect fit with filter papers. Used for filtration & decanting of a wide variety of liquids. Built from Borosil's world-renowned 3.3 borosilicate, low-expansion, chemically resistant glass. Avail. in a variety of sizes from 25mm diameter (XS, Extra Small) to 100mm diameter (XXL, 2X-Extra Large). Borosil Short Stem Funnels comply with DIN/ISO 4798. In collaboration with Borosil Glass Works, Foxx Life Sciences is proud to bring the outstanding quality of Borosil Type 3.3 Borosilicate glassware to North America for the first time. Manufactured from the same USP Type 1 borosilicate glass that North American scientists have come to trust Borosil Laboratory Glassware offers unparalleled mechanical strength, clarity & reliability at competitive prices. And thanks to a unique annealing process, Borosil Glassware is stress-free & incredibly resistant to thermal shock.
Chemglass Life Sciences Funnel, Drum & Carboy, 2.1L, 207mm Top Diameter
Funnel, Drum & Carboy, 2.1L, 207mm Top Diameter. Large funnels with handles are ideal for filling columns, barrels, tanks, and carboys providing ample volume and fast flow. The two smaller sizes have a handle at the rim. Molded of natural polypropylene, funnels are autoclavable at 121°C (250°F).