Filling Funnels
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
Fisherbrand™ Imbuto in vetro borosilicato
Imbuto liscio in vetro borosilicato. L'imbuto in vetro borosilicato Fisherbrand™ è ideale per il travaso di liquidi in applicazioni di laboratorio.
Nickel Electro™ Imbuto in acciaio inox
This durable stainless steel funnel, break-resistant, stain proof and easy to clean makes it an ideal choice for most laboratory and research environments.
Nickel Electro™ Imbuto da laboratorio in acciaio inox 304
Da utilizzare con o senza membrane filtranti per la filtrazione per gravità e per semplici procedure che prevedono l’uso di un imbuto. L'imbuto da laboratorio in acciaio inox Nickel Electro™ è dotato di scanalatura di sfiato per un flusso completo e continuo di liquidi o solidi.
De Buyer™ Imbuti filtranti in acciaio inox
Keep laboratory work areas clean and avoid waste with De Buyer™ Stainless Steel Filler Funnels. The funnels can be used for a wide range of applications.
Imbuto in vetro con gambo Pyrex™
Manufactured from chemically resistant Pyrex™ borosilicate glass. Pyrex™ Glass Funnel with Stem is ideal for transferring powders. Include a short, wide stem for smooth flow.
BRAND™ Imbuti in PP con interno scanalato
Le scanalature esterne consentono il deflusso dell'aria durante la filtrazione.
DWK Life Sciences DURAN™ Funnel, with short stem
A funnel enables a clean transfer and filtration of liquids.
DWK Life Sciences DURAN™ Funnel, with long stem, Bunsen Funnel
A funnel enables a clean decanting and filtering of liquids. In addition, the Bunsen funnel has a long handle.
Scientific Glass Labs™ Imbuto per sostanze in polvere in vetro borosilicato
In vetro borosilicato. L’imbuto per polveri Scientific Glass Labs™ in vetro borosilicato rende meno probabile l’intasamento o l’ostruzione quando si imbottigliano sostanze polverose.
Fisherbrand™ Imbuto con gambo corto in vetro sodico-calcico
In vetro sodico-calcico. L’imbuto a gambo corto Fisherbrand™ in vetro sodico-calcico rende meno probabile l’intasamento quando si imbottigliano sostanze più dense.
Fisherbrand™ Imbuto in vetro sodico-calcico
Imbuto liscio in vetro soda-calcico. L'imbuto in vetro soda-calcico Fisherbrand™ è ideale per il travaso di liquidi in applicazioni di laboratorio.
Fisherbrand™ Imbuti in PTFE
Con superficie interna ultra liscia antiaderente. Imbuto in PTFE resistente alle sostanze chimiche e inerte.
BRAND™ Polypropylene Powder Funnels
Constructed of durable, lightweight polypropylene. Brand™ Polypropylene Powder Funnels are an excellent option for the transfer of samples without flow rate restrictions.
