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, 29/32, 145mm OD opening, 215mm height above the joint
Funnel, powder, flat side, 29/32, 145mm OD opening, 215mm height above the joint
Ace Glass, Inc. Funnel, powder, flat side, 14/20, 50mm OD opening, 70mm height above the joint
Funnel, powder, flat side, 14/20, 50mm OD opening, 70mm height above the joint
Ace Glass, Inc. 190mm powder funnel with 45/50 inner joint
190mm powder funnel with 45/50 inner joint is useful in pouring powders or liquids into ground joint containers.
Ace Glass, Inc. 100mm powder funnel with 29/32 inner joint
100mm powder funnel with 29/32 inner joint is useful in pouring powders or liquids into ground joint containers.
BURKLE INC Funnel, stainless steel, V2A, outer-Ø 3.94 in. (100 mm)
The rugged stainless steel filling funnel makes it easy to fill and transfer free-flowing powders, liquids and low-viscosity media. With an air vent on the discharge tube, it provides complete and unobstructed flow for efficient handling of a wide variety of materials.
The larger versions of the feed hopper are also equipped with a handle, which not only increases safety when handling larger fill quantities, but also improves usability in industrial environments.
Chemglass Life Sciences Funnel, Powder, PTFE, 104mm Diameter, Stem 22mm, 150mm Height
PTFE powder funnel is totally chemically inert with super smooth non-stick internal finish.Virgin grade PTFE conforming to FDA and USP Class VIChemical Resistance is virtually total.Temperature Range, -200°C to 260°C (-328°F to 500°F).Shelf life is considered indefinite within the confines of normal use and storage conditions.Autoclavable
Chemglass Life Sciences Funnel, Drum & Carboy, 14.1L, 353mm Top Diameter
Funnel, Drum & Carboy, 14.1L, 353mm 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).
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.
Sigma Aldrich Fine Chemicals Biosciences BRAND FUNNEL SHORT STEM- GLASS
NC3848481 BRAND FUNNEL SHORT STEM- GLASS
California Pacific Lab & Consulting 8 ECO FUNNEL W/53MM SCREW CAP
8 in. SAFETY ECO FUNNEL FOR LIQUID WASTE COLLECTION, FITS 53MM SCREW CAP BOTTLES, PREVENTS 99.9% EMISSIONS OF TOXIC FUMES, HDPE, RED LID WITH GASKET THAT LATCHES, REMOVABLE FILTER FOR LARGE PARTICLES, 2000 ML CAPACITY, LIQUID LEVEL TUBE FOR PREVENTING OVERF
CALIFORNIA PACIFIC LAB & CONSULTING 8IN ECO FUNNEL SYS 4L CAP 1EA
NC3316222 8IN ECO FUNNEL SYS 4L CAP 1EA
California Pacific Lab & Consulting FUNNEL SAFETY HAZARDOUS
Eco funnel, w/fS-70 screw cap, 8 in., Made of HDPE and has an easy use lid, gasket, positive latch, filter, and an 11 ft. stem to effectively reduce chemical evaporation of hazardous solvents in the lab, 1750mL
Chemglass Life Sciences Funnel, Powder, PTFE, 158mm Diameter, Stem 24mm, 200mm Height
PTFE powder funnel is totally chemically inert with super smooth non-stick internal finish.Virgin grade PTFE conforming to FDA and USP Class VIChemical Resistance is virtually total.Temperature Range, -200°C to 260°C (-328°F to 500°F).Shelf life is considered indefinite within the confines of normal use and storage conditions.Autoclavable