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
Ace Glass, Inc. Funnel, powder, flat side, 71/60, 255mm OD opening, 300mm height above the joint
Funnel, powder, flat side, 71/60, 255mm OD opening, 300mm height above the joint
Ace Glass, Inc. 100mm powder funnel with 24/29 inner joint
100mm powder funnel with 24/29 inner joint is useful in pouring powders or liquids into ground joint containers.
Ace Glass, Inc. 125mm powder funnel with 24/40 inner joint
125mm powder funnel with 24/40 inner joint is useful in pouring powders or liquids into ground joint containers.
Anton Paar Flow Cell with Filling Funnel for Abbemat 300/350/500/550
For routine analysis of low viscosity liquids. The sample is poured into the funnel and completely replaces the previous one so that a quick and comfortable sample exchange is possible.Suitable for use with Anton Paar refractometersAbbemat 300 item NC1818534,Abbemat 350 item NC1818535,Abbemat 500 item NC1818537,Abbemat 550 item NC1818539
Foxx Life Sciences Autofil 2 Bottle Top Vacuum Filtration unit, Funnel Only, 250 mL, 0.22 µm PES Membrane, Sterile, 12/CS
The Autofil 2 Bottle Top Vacuum Filter Funnel Only features 0.1um, 0.2um, or 0.45um PES membranes. Perfect for filtering FBS and other viscous solutions. The membrane is low protein binding and surfactant-free.
Features
Available in 250ml, 500ml and 1000ml. Funnel is compatible with GL 45 thread bottles
Bottle top Filter units include adapter for connecting to vacuum hose
Design includes the NEW EZLabpure™ ergonomic bottle shape with molded finger grip
GL 45 caps provides a convenient gripping surface
All units are sterile and manufactured from USP Class VI polystyrene in an ISO 13485 clean room
Prism Research Glass POWDER FUNNEL 14/20 JOINT
Powder funnel 14/20 joint offset straight side to be used with multi neck flask
Chemglass Life Sciences 75mm Powder Funnel, Offset, 24/40 Inner Joint, C to C Offset is 30mm
75mm Powder Funnel, Offset, 24/40 Inner Joint, C to C Offset is 30mm. Funnel has a lower stem made with an offset to permit use with multi-neck flasks.
BURKLE INC Disposable powder funnel PS, Ø 3.94 in. (100 mm), white
The disposable powder funnel has a short and wide outlet and is suitable for transferring powdered samples and materials, granulates, suspensions and other liquids.
The wide opening of the disposable powder funnel prevents the powder or granulate from clogging during filling. The practical and hygienic filling aid is therefore a useful accessory when taking samples or in the laboratory.
In combination with a filter paper, the disposable funnel is also very suitable for filtering.
California Pacific Lab & Consulting 4IN ECO FUNNEL 38-400 RED
4" ECO Funnel® with 38-400 cap adapter for 38mm plastic jugsSize:4 inClosure Size:38-400Color:naturalMaterial:polyethyleneStyle:funnelClosure Style:screw threadCountry of Origin:Made in the USA