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 Utility Funnel Assortment Pack, 3/pk; 5ml, 25ml, 40ml
Polypropylene funnels have eight internal ribs to facilitate filtration. Autoclavable.
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.
MSC J.T. Eaton Earth Anchor, Stainless Steel, Aluminum, 50-Pack
This earth anchor bait station securing device is designed for heavy-duty, long-lasting outdoor use. Crafted from a stainless steel cable and durable aluminum anchor, it effectively secures rodent bait stations to the ground. Its spike-style design allows for easy insertion into soil, preventing theft, tampering, or displacement of bait stations.
- Made with a stainless steel cable and durable aluminum anchor.
- Anchors rat and mouse bait stations.
- Features a spike-style anchor for easy ground insertion.
- Universal fit cable attaches to any bait station with a securing hole.
- Ideal for outdoor rodent control in various settings.
Enterprise Technology Solutions Lorell Transitional Pull, .5"x4"2", 2/PK, Black
Customize your office drawers with these transitional pulls. They fit on your Lorell Essentials Series pedestals or Chateau Series lateral files for a sharper, more individualized look. Design features a 3-7/10" handle hole distance. Pulls include four handle screws for convenient mounting.
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 FUNNEL SAFETY HAZARDOUS
8 in. Eco Funnel, Closure Size: 38mm-430, Mouth: 8 in., Suitable for a Common 4L Bottle, (Including Old 4L Glass Solvent Bottles)
Chemglass Life Sciences Chemglass Disposable Filter Funnel, 18 mL, Polyethylene Frit with 500 mg Diatomaceous Earth (Shelf Pack)
Chemglass disposable filter funnel (18 mL) is a single-use filtration device for solid-liquid separations in chemistry and biological laboratories. It uses a polyethylene frit charged with diatomaceous earth to provide consistent filtration and is supplied in a shelf-pack tray for convenient storage and handling.
- 18 mL nominal volume.
- Polyethylene frit loaded with 500 mg diatomaceous earth for consistent filtration performance.
- 80 mm stem length to minimize contamination of vacuum adapters.
- Shelf-pack, shrink-wrapped SBS-coated white tray for convenient handling and storage.
- Compatible with standard glass vacuum adapters and PTFE stopcock for controlled vacuum filtration.
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
Cole-Parmer Disposable PP Vented Utility Funnel, 50 mL, 100/Bag
Disposable polypropylene funnels are vented to prevent air lock.