Best Filtering Lab Flasks of 2025

The StonyLab Filtering Flask is designed for efficient pressure filtration, making it ideal for concentrated solutions that are slow to filter under normal pressure. Made from durable borosilicate glass, it can withstand temperatures up to 200°C, ensuring reliability during experiments. The flask features a narrow mouth with a tooled top finish, which aids in precise pouring and handling. Additionally, it is equipped with a small suction nozzle suitable for 8mm I.D. hoses, enhancing your filtration setup with ease and convenience.

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.

The Labasics Filtering Flask is an essential tool for laboratory vacuum filtration applications. Its 24/40 standard taper outer joint and 9 mm hose interface ensure compatibility with various setups, making it easy for you to filter concentrated solutions. Made from high borosilicate glass, it withstands high pressure and is reusable, providing you with a reliable option for your experiments. With a maximum temperature tolerance of 250°C, you can confidently use this flask in demanding environments.

The StonyLab Filtering Flask is designed for efficient pressure filtration, making it ideal for situations where concentrated solutions are slow to filter. Its narrow mouth and tooled top finish help prevent spills and ensure a secure seal during use. Made from durable borosilicate glass, this flask can withstand high temperatures and is perfect for laboratory settings. With a generous capacity of 1000 ml, you can filter larger volumes without needing to refill frequently.

The StonyLab Filtration Kit is designed for general filtration and solvent purification, featuring a 1000 ml filtering flask and a 300 ml graduated funnel. Its sand core head has a diameter of 40 mm with a pore size of 10 μm, accommodating filter paper sizes between 47-50 mm. This apparatus is made from Borosilicate glass, ensuring it is both acid and alkali resistant while withstanding temperatures up to 200°C. With easy cleaning and reusability, this kit is a practical addition to any laboratory setup.

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.

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.

The Karter Scientific Filtering Flask is a robust 50ml flask made from heavy-duty 3.3 borosilicate glass. Its 10ml, 20ml, and 50ml graduations allow for precise measurements, making it ideal for various laboratory applications. With a height of approximately 83mm and an outer diameter of around 52mm, it is compact yet spacious enough for your needs. This flask’s durable construction ensures it can withstand the demands of everyday use in a lab setting, providing you with reliable performance.

The QWORK Glass Filtering Flask boasts a generous 1000ml capacity, making it ideal for various laboratory tasks. Crafted from high-quality borosilicate glass, it offers clarity and durability, allowing you to easily monitor contents. Its narrow mouth design enhances precision during pouring, while the top finish ensures a smooth experience. This two-pack set provides excellent value for those needing multiple flasks, adding convenience to your lab work.

The Eisco Buchner Filtering Flask is crafted from high-quality, heavy-duty borosilicate glass, ensuring durability and resistance to thermal shock. With a capacity of 500ml, it provides ample space for your experiments. The flask features top and side joints with a 24/29 size socket, allowing for easy attachment of various laboratory apparatus. Standing at 6.5 inches tall, it is designed to fit comfortably in any science or home laboratory, making it a convenient choice for your filtration needs.