Best Filtering Lab Flasks of 2026

Tom Law Avatar
Tom Law
Last Updated: 2 Feb 2026

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Filtering lab flasks are essential equipment in many scientific laboratories. These flasks are designed to facilitate the filtration of liquids and solids, ensuring the separation of unwanted materials. They come in different sizes and shapes to fit various laboratory needs, and they are made from high-quality materials to ensure their durability and safety. Filtering lab flasks are widely used in chemistry, biology, and other scientific fields, and they are an indispensable tool for any laboratory looking to achieve accurate and precise results.

At a Glance: Our Top Picks

United Scientific Borosilicate Glass Filtering Flask Cover #TOP 1
United Scientific Borosilicate Glass Filtering Flask
ftb score rating icon 9.9
Labasics 2000 ml Borosilicate Glass Flask Cover #TOP 2
Labasics 2000 ml Borosilicate Glass Flask
ftb score rating icon 9.8
Fristaden Lab 2000mL Vacuum Filtration Flask Kit Cover #TOP 3
Fristaden Lab 2000mL Vacuum Filtration Flask Kit
ftb score rating icon 9.6

Top 4 Filtering Lab Flasks

#TOP 1

United Scientific Borosilicate Glass Filtering Flask

FG5340-1000
Clear
United Scientific Borosilicate Glass Filtering Flask Cover
United Scientific™ FG5340-1000 Borosilicate Glass Heavy Wall Filtering Flask, Bolt Neck with Tubulation, 1000ml (1 Liter) Capacity

The United Scientific Filtering Flask is designed for precision and ease in laboratory settings. It features ASTM standard graduations, allowing you to easily measure liquids with confidence. Cleaning is a breeze as all flasks are dishwasher safe, saving you time and effort. The flasks are made using state-of-the-art manufacturing processes, ensuring high quality and reliability. With dimensions of 138mm in diameter and 245mm in height, this flask is perfect for various laboratory applications.

What We Like
ASTM standard graduations
Dishwasher safe
High quality manufacturing
Easy to measure liquids
Convenient dimensions
#TOP 2

Labasics 2000 ml Borosilicate Glass Flask

LB-FilterFlask-2000ml-Glass-1PK
Transparent
2000 ml
Labasics 2000 ml Borosilicate Glass Flask Cover
Labasics Glass 2000 ml Heavy Wall Borosilicate Glass Filtering Flask, Bolt Neck with Tubulation, 2000 ml

The Labasics Glass Flask is crafted from durable borosilicate glass, making it capable of withstanding temperatures up to 250°C. This feature ensures that you can use the flask for various heating applications without the fear of breakage. With a generous capacity of 2000 millilitres, it is perfect for larger experiments or processes. The flask's narrow mouth and tooled top finish facilitate easy pouring and minimise spillage, enhancing your overall experience in the lab. As each flask is handmade, you can expect a unique touch to your laboratory equipment.

What We Like
Durable borosilicate glass
High temperature resistance
Generous 2000 ml capacity
Narrow mouth for easy pouring
#TOP 3

Fristaden Lab 2000mL Vacuum Filtration Flask Kit

FLFDA2000ML
Fristaden Lab 2000mL Vacuum Filtration Flask Kit Cover
American Fristaden Lab Vacuum Filtration Distillation Apparatus | 2000mL Filtering Flask | 300mL Graduated Funnel | 1 Year Warranty

The Fristaden Lab Filtration Kit is a versatile tool designed for various uses, from chemistry experiments to making essential oils and soaps. It offers fast filtering action, allowing you to speed up your work by connecting a vacuum hose, which is especially useful for delicate compounds that need gentle handling. The kit is straightforward to use, with a 300mL graduated funnel that helps you measure liquids easily, unlike typical Buchner funnels. Plus, the 2000mL filtering flask handles larger tasks, making it a practical choice for both beginners and experienced users.

What We Like
Suitable for multiple lab uses
Fast filtering with vacuum option
Easy to use and clean
Large 2000mL capacity flask
Graduated funnel for easy measurement
#TOP 4

QWORK 1000ml Glass Vacuum Filtration Apparatus

WD3059
1000ML
QWORK 1000ml Glass Vacuum Filtration Apparatus Cover
QWORK 1000ml Glass Vacuum Suction Filter, Lab Vacuum Filtration Distillation Apparatus for Filtering in Lab with 300mL Graduated Funnel

The QWORK Vacuum Filtration Kit is an essential tool for laboratory work. It includes a 1000ml flask and a 300ml graduated funnel, making it easy for you to read measurements accurately. Constructed from high-quality borosilicate glass, this apparatus is not only strong and durable but also heat-resistant, ensuring longevity in your experiments. The included aluminium clamp provides a secure hold, allowing you to stabilise the funnel easily while working. With a pore size of 30-50µm, it is suitable for various membrane filter papers, enhancing your filtering capabilities.

What We Like
Durable borosilicate glass
Easy-to-read graduated funnel
Secure aluminium clamp
Compatible with various filter papers
Buying Guide Image
Editor's Notes

During our filtering lab flask research, we found 76 filtering lab flask products and shortlisted 4 quality products. We collected and analyzed 5,028 customer reviews through our big data system to write the filtering lab flasks list. We found that most customers choose filtering lab flasks with an average price of £20.00.

The filtering lab flasks are available for purchase. We have researched hundreds of brands and picked the top brands of filtering lab flasks, including United Scientific, Labasics, Fristaden Lab, QWORK.

Written by
Tom Law Avatar

Tom Law is an adventurer who has captured his love for nature into all of his works. A native of Newcastle, Tom has always wanted to share beautiful stories alongside the lovely sights of nature. Fortunately, he took into photography on one of his many journeys and gradually grew a passion for it. Tom Law is now an expert photographer who tours the world while creating and keeping memories of his adventures. He frequently puts his thoughts and experiences into writing.