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
Foxx Life Sciences Borosil Funnels with 60 Angle Bowls and 35mm Stems, Small (S), 30/C
Overall Dimension: 14.57" L x 14.57" W x 8.27" H. 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.
Chemglass Life Sciences 8" ECO Funnel, 53mm Thread, Use CG-1759-11 Waste Container
8" ECO Funnel, 53mm Thread, Use CG-1759-11 Waste Container. The 8¿ Eco Funnel is make of HDPE and has a 2000mL fluid capacity. Features an easy to use lid, gasket and positive latch to close the lid and maintain an airtight seal. A filter is also built into the interior to reduce the loss of magnetic stir bars and other items when emptying the contents of a vessel into the funnel. The funnel is equipped with an 11¿ stem to reduce chemical evaporation of hazardous solvents in the lab.
Ace Glass, Inc. Powder funnel, 75mm, HW 24/40 joint
75mm heavy wall powder funnel for greater durability when pouring powders or liquids into ground joint containers. Funnel has a 24/40 standard taper joint.
Prism Research Glass POWDER FUNNEL 14/20 JOINT
Powder funnel 14/20 joint offset straight side to be used with multi neck flask
Essendant TOPS Docket Gold Planner Pad Project-Management Format Medium/College Rule Black Cover 70 White 8 5x11 75 Sheets
TOPS Docket Gold Planner Pad Project-Management Format Medium/College Rule Black Cover 70 White 8 5x11 75 Sheets
Fritsch Milling And Sizing Inc Funnel 5 mm for Dry Dividing, L-27
Funnel 5 mm for dry dividing for LABORETTE 27. Funnels are also available in 5, 15 and 22 mm dia. to suit the particle size of the sample being divided.
For the division of suspensions with dividing head, division ratio 1:30 a separate funnel, order no. 27.1330.16 is offered
