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
CALIFORNIA PACIFIC LAB & CONSULTING 8IN ECO FUNNEL SYS 4L CAP 1EA
NC3316222 8IN ECO FUNNEL SYS 4L CAP 1EA
California Pacific Lab & Consulting ECO FUNNEL 8 ECO FUNNEL WITH
NC3866205 ECO FUNNEL 8 ECO FUNNEL WITH
Hach Company Funnel, Analytical, 254 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 ECO FUNNEL 8 ECO FUNNEL WITH
NC3866206 ECO FUNNEL 8 ECO FUNNEL WITH
Foxx Life Sciences Autofil 2 Bottle Top Filter, Funnel Only, 1000 mL, 0.1 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
Ace Glass, Inc. Funnel, heavy wall glass, angled, 24/40 joint, 100mm ODx140mmlength
Funnel, heavy wall glass, angled, 24/40 joint, 100mm ODx140mmlength
Ace Glass, Inc. 100mL power dispensing funnel
100mL power dispensing funnel with side-operated screw feed instrument for addition of powders and solids, up to 25 mesh, to reactions without problems of seizing or binding. Features a flexible PTFE screw thread wrapped on a precision PTFE-ceramic shaft, and contained within a precision-bore housing. Completely inert materials allow flushing with solvents without fear of contamination. #15 Ace-Thred offers easy disassembly for cleaning. Large 11/4 knob for smooth and easy turning. 24/40 top female and bottom male joints. 14/20 joint atop inner male joint for easier cleaning.
Ace Glass, Inc. 125mm powder funnel with 35/45
125mm powder funnel with 35/45 inner joint is useful in pouring powders or liquids into ground joint containers.
Cole-Parmer Disposable PP Vented Utility Funnel, 50 mL, 100/Bag
Disposable polypropylene funnels are vented to prevent air lock.
Foxx Life Sciences Borosil Funnels with 60 Angle Bowls and 75mm Stems, Extra Large (XL), 20/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.
Ace Glass, Inc. Powder funnel, 75mm, angle heavy wall, 24/40 joint
75mm heavy wall angle powder funnel with 24/40 standard taper joint. For use with pouring powders or liquids into multi-neck flasks.