Best Lab Boiling Flasks of 2025

The Karter Scientific Boiling Flask has a generous capacity of 1000ml, making it ideal for various laboratory applications. Its height of 197mm and an outside diameter of 127mm provide a stable design for safe boiling. Made from durable 3.3 borosilicate glass, this flask ensures high resistance to thermal shock, allowing you to work with extreme temperatures without worry. The long neck design is perfect for minimizing evaporation and facilitating easy pouring, making your experiments more efficient and manageable.

The Eisco Labs Boiling Flask is a heavy-duty borosilicate glass flask with a capacity of 1000ml. Its narrow neck design allows for easy pouring and controlled flow. This flask is perfect for various laboratory applications such as heating, mixing, and storing liquids. The borosilicate glass construction ensures durability and resistance to thermal shock, making it suitable for high-temperature experiments. The flat bottom provides stability on laboratory surfaces. Please note that the stopper is not included, but it can easily be purchased separately. With its high-quality construction and convenient features, the Eisco Boiling Flask is an essential tool for any laboratory.

The Eisco 1000 mL Flask is designed for various laboratory applications, making it an essential tool for your experiments. With its large capacity, you can conduct substantial heating and distillation processes efficiently. The standard 24/40 ground joint ensures a secure fit with other lab equipment, which is crucial for maintaining safety during chemical reactions. Made from borosilicate glass, this flask withstands high temperatures and resists chemical damage, so you can use it confidently with hot plates or burners. Its flat bottom design provides stability, making it easy to mix and heat liquids without spills.

The ULAB Boiling Flask Set includes two sizes, 250ml and 500ml, designed for laboratory use. Made from borosilicate 3.3 glass, these flasks resist cracking and ensure durability during heating. The flat bottom and short neck design allow for stable placement and easy handling, providing convenience when boiling liquids. Additionally, the uniform wall thickness promotes even heating, making your experiments more efficient. This set is perfect for anyone looking for reliable and high-quality lab equipment.

The QWORK Round Bottom Flask is crafted from high-quality borosilicate glass, ensuring durability and reusability for your laboratory needs. With a 1000ml capacity and a standard 24/40 taper outer joint, it offers a reliable, leak-free connection that is easy to work with. Its heat-resistant design allows you to heat it directly over an open flame, making it suitable for various chemistry processes. The flask's round shape helps distribute stress evenly, reducing the risk of breakage during vacuum applications, which is particularly useful in organic chemistry and distillation tasks.

The ULAB Boiling Flask Set includes two 250ml flasks designed for laboratory use. Crafted from durable borosilicate 3.3 glass, these flasks resist cracking and can withstand high temperatures. The round bottom shape allows for even heating, ensuring that your liquids boil consistently. Additionally, the short neck design facilitates easy handling, making it convenient for prolonged boiling tasks. With uniform wall thickness, these flasks are perfect for laboratory settings where efficiency and reliability are key.

The Karter Scientific Boiling Flask is designed with a 250ml capacity, making it ideal for various laboratory applications. Its height of 138mm and outside diameter of 85mm provide a compact yet functional size for your experiments. Made from durable 3.3 borosilicate glass, this flask can withstand high temperatures, ensuring safety and reliability during boiling processes. The long neck design allows for easy handling and reduces the risk of spills, giving you more confidence when working with liquids.

The QWORK 1000ml Flask is designed for efficiency and ease in laboratory settings. Its durable glass construction ensures that it can withstand frequent use without compromising quality. The dual neck design allows you to connect multiple devices at once, making your experiments more versatile. You will appreciate the angled neck, which makes pouring liquids easier and helps prevent spills. Additionally, the standard taper outer joints ensure secure connections with other lab equipment, giving you peace of mind during your experiments.

The QWORK Glass Boiling Flask is crafted from high-quality borosilicate glass, ensuring durability and reusability for your laboratory needs. Its 24/40 standard taper outer joint allows for easy interchangeability and a leak-free experience, making your experiments more efficient. This flask features a flat bottom design, enabling it to stand independently on any flat surface, eliminating the need for additional supports. Additionally, it is versatile and widely used in various applications, such as organic chemistry and distillation processes, providing you with a reliable tool for your scientific endeavors.

The Pyrex 250mL Flask is a reliable tool for heating and boiling liquids. Its long neck and flat bottom design make it easy to handle while providing stability during use. You can fit a #5 stopper securely in the tooled mouth, ensuring a tight seal that prevents spills. Made from high-quality borosilicate glass, this flask is not only clear but also strong, withstanding high temperatures up to 230 degrees Celsius. This makes it perfect for various laboratory applications, allowing you to work with heat and chemicals safely and effectively.