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
Cole-Parmer Essentials Stainless Steel Funnel, 13 oz
Cole-Parmer Stainless Steel Funnel, 13 oz, Cole-Parmer stainless steel funnels are a laboratory supply you will count on for years of use. Stay in stock with our selection of medium gauge, 304 stainless steel funnels in various capacities and overall sizes.
Sklar Instruments Funnel, Sklar, Stainless Steel. This product is a 8-3/8 in. x 9-1/2 in. funnel with a 64 oz capacity. EA/1.
Funnel, Sklar, Stainless Steel. Sklar's Surgical Funnel features a hanging hook so it can easily be elevated above a patient's head when introduction of fluid is necessary as part of a surgical procedure. This product is a 8-3/8 in. x 9-1/2 in. funnel with a 64 oz capacity.
NEST SCIENTIFIC USA WEDGED IN FUNNELS 100CS
These funnels feature a tapered wedge shape that allows them to snugly fit into tubes for a leakproof seal. Made from USP grade VI polypropylene. Molded in ISO 7 cleanroom and lot tested free of DNase, RNAase, DNA, cytoxins/endotoxins and BSE/TSE. Produced in a cGMP (21 CFR part 820/821), ISO 13485 and ISO 9001 facility.
Bellco Glass, Inc. Funnels. – 60mm, Polypropylene
Funnels feature internal ribs to promote faster flow and external ribs to help prevent airlock.Polystyrene funnels are appropriate for use with mild acidic or alkali solutionsPolypropylene funnels are suitable for use with organic solvents and stronger acids and alkalisFunnels measure approximately 60 mm (2½") wide at the top with a 60° taper to the funnel stem. Material-Polypropylene (PP), Color-Natural, Diameter (mm)-60, Height (mm)-81.2, Package Type- bulk, Carton Qty-100
Chemglass Life Sciences 100mm Powder Funnel, 24/40 Inner Joint, 195mm OAL
100mm Powder Funnel, 24/40 Inner Joint, 195mm OAL. Useful for the introduction of solids or liquids into reactions under atmospheric conditions. Funnel has steep sides to permit free-flow of solid materials. With standard taper inner joint.
California Pacific Lab & Consulting CALIFORNIA PACIFIC LAB & CONSULTING
NC3955552 4 ECO FUNNEL WITH 70MM CAP AD