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Lab funnels are essential tools for safely and efficiently transferring liquids and powders in various laboratory settings. Selecting the appropriate funnel material, size, and design ensures accurate results and prevents contamination or spills during experiments and procedures.
PERFECT FOR LAB: Made of Borosilicate Glass, the Glass Funnels have High chemical durability and low thermal expansion, which can withstand the temperature under 800 °C (~1500 °F)
HEAVY DUTY: Reusable, environmental friendly, easy to clean, high temperature resistance, for laboratory, kitchen, science experiment, liquid
4 DIFFERENT SIZES: Our Glass Funnels come in 4 different sizes: 100 mm (170mm Length), 75 mm (130 mm Length), 50 mm (90 mm Length) & 40 mm (70 mm Length) Diameter
VARIOUS & WONDERFUL DESIGN: Lab Glass Funnels come in 4 different sizes. All of them have round edges and smooth surface, which are your essential tools in doing an experiment
SAFE GUARANTEE: Due to the glass material, this product may break during delivery. If you receive defective items, please let us know via email to get replacement items
NO-SPILL TRANSFER || Useful for transferring powdered or liquid reagents
INDUSTRIAL QUALITY || Made of heat tolerant and chemical resistant polypropylene plastic
PARALLEL STEM || Parallel stem minimizes bridging of powder
GREAT FOR PROFESSIONAL LABORATORIES, CLASSROOMS & HOUSEHOLD || Designed for use in professional laboratories, but is an ideal choice for science classrooms, households, workshops & garages
GREAT LAB TOOLS: Made of High-quality Plastic, these Funnels have High chemical durability and low thermal expansion
DURABLE & USABLE: Reusable, environmental friendly, will not shatter, easy to clean, perfect for laboratory, kitchen, science experiment, liquid or powder, etc
3 DIFFERENT SIZES: Our Plastic Funnels come in 3 different sizes: 100mm, 75mm , 50mm
VARIOUS & PERFECT DESIGN: Not only with different sizes, they also have round edges and smooth surface, which will not harm your hands in doing an experiment
SAFE GUARANTEE: If you receive defective items, please let us know via email to get replacement items
POWDER FUNNEL || Powder funnel measuring 4" wide. Useful for transferring powdered or liquid reagents
INDUSTRIAL QUALITY || Made of heat tolerant and chemical resistant polypropylene plastic
PARALLEL STEM || Parallel stem minimizes bridging of powder. Funnel stem measures 1.3" in length and has an outer diameter of 20mm
GREAT FOR PROFESSIONAL LABORATORIES, CLASSROOMS & HOUSEHOLD || Designed for use in professional laboratories, but is an ideal choice for science classrooms, households, workshops & garages
10 PACK FILTER FUNNELS || Pack of ten filter funnels, each measuring 2.6" wide. Useful for separating solids from liquids, as well as for easier transfers of liquids to narrow mouthed containers
INDUSTRIAL QUALITY || Made of chemical resistant polyethylene plastic
2.5 INCH STEM || Each funnel stem measures 2.5" in length and has an outer diameter of 6.5mm
GREAT FOR PROFESSIONAL LABORATORIES, CLASSROOMS & HOUSEHOLD || Designed for use in professional laboratories, but is an ideal choice for science classrooms, households, workshops & garages
Discover Precision: ULAB Glass Funnel, with a 3.74in inner diameter and 6.97in length, brings accuracy to your lab work for efficient and exact bottle filling.
Quality Craftsmanship: Crafted from high-quality glass, this funnel ensures durability and chemical resistance, making it an ideal choice for various laboratory tasks.
Versatile Application: Whether you're working on a chemistry experiment or handling delicate liquids, our glass funnel is an essential tool in any lab setting.
Easy Handling: The 6.97in length with a 4in neck provides a comfortable grip while maintaining a steady flow. Its design minimizes spills and allows for controlled pouring.
Lab Essential: From chemistry enthusiasts to professionals, our glass funnel is a must-have for accurate and controlled liquid transfers. Elevate your lab experience with ULAB.
Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Lab Funnels
Material Matters
Lab funnels come in several materials, each suited for different applications. Glass funnels are common due to their chemical resistance and ease of cleaning, making them ideal for general laboratory use. However, they are fragile. Plastic funnels, often made from polypropylene or polyethylene, are more durable and less expensive, suitable for non-critical applications or when breakage is a concern. For filtering, Büchner and Hirsch funnels, typically made of porcelain or plastic, are designed with perforated plates to support filter paper.
Size and Shape Considerations
The size of a funnel is determined by its stem diameter, top diameter, and overall height. Smaller funnels are suitable for precise pouring into narrow openings, while larger funnels are better for bulk transfers. The shape also plays a role:
Conical (or funnel) funnels: The most common type, with a wide opening and a long, tapered stem, ideal for general pouring and filtration with filter paper.
Separatory funnels: Feature a stopcock at the bottom of the stem, allowing for controlled separation of immiscible liquids.
Buchner and Hirsch funnels: Designed for vacuum filtration, with a perforated plate instead of a solid cone.
Specialized Features
Beyond basic design, consider specialized features. Some funnels have ground glass joints for secure connections to other lab glassware. Graduated funnels offer volume markings for more precise measurements during transfer. For applications involving volatile or hazardous substances, funnels with lids or stoppers can minimize evaporation and prevent spills.
Frequently Asked Questions
What is the difference between a glass and plastic funnel?
Glass funnels offer excellent chemical resistance and are easy to sterilize, making them suitable for precise work. Plastic funnels are more impact-resistant and cost-effective, ideal for general use or situations where breakage is a risk.
When should I use a separatory funnel?
A separatory funnel is used for liquid-liquid extraction, allowing you to separate immiscible liquids based on their densities. The stopcock at the bottom enables controlled draining of the lower layer.
What is a Bu00fcchner funnel used for?
A Bu00fcchner funnel is specifically designed for vacuum filtration. It holds a filter paper on its perforated plate, allowing for rapid separation of solids from liquids under reduced pressure.
How do I choose the right size funnel?
Consider the size of the container you are pouring into and the volume of material you are transferring. Narrow stems are for small openings, while wider stems and larger top diameters are for larger volumes and faster pouring.
Can I use a funnel for filtering solids?
Yes, conical funnels are commonly used with filter paper for gravity filtration of solids. For faster filtration or when dealing with fine precipitates, a Bu00fcchner or Hirsch funnel with vacuum is more appropriate.
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