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 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.
Chemglass Life Sciences 150mm Powder Funnel, 29/42 Inner Joint
150mm Powder Funnel, 29/42 Inner Joint. Useful for the introduction of solids or liquids into reactions under atmospheric conditions. Funnels have 60º side angle and a standard taper inner joint.
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).
MSC PRO-LUBE 1707001 8 oz Capacity Plastic Funnel 4-1/2" Mouth OD, 1/2" Tip OD, Straight Spout, Red
PRO-LUBE 1707001 8 oz Capacity Plastic Funnel 4-1/2" Mouth OD, 1/2" Tip OD, Straight Spout, Red
MSC PRO-LUBE 1707002 16 oz Capacity Plastic Funnel 6" Mouth OD, 3/4" Tip OD, Straight Spout, White
PRO-LUBE 1707002 16 oz Capacity Plastic Funnel 6" Mouth OD, 3/4" Tip OD, Straight Spout, White
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
Thomas Scientific STERIWARE BLUE LIQUID FUNNEL,
SteriWare Blue Liquid Funnel, PP,100mm Top Diameter, Sterile
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
