Premium Borosilicate Glass 250ml Round Bottom Flask with Flat Base – High-Durability Laboratory Boiling Flask

The 250ml Round Bottom Flask with Flat Base is a versatile and essential piece of laboratory glassware, combining the heating efficiency of a traditional boiling flask with the convenience of a free-standing design. Crafted from high-expansion 3.3 borosilicate glass, this round bottom flask offers exceptional resistance to thermal shock and chemical attack. The flat base allows the flask to sit securely on hot plates, lab benches, or heating mantles without the need for additional support rings, making it ideal for heating, mixing, and storage applications in any professional chemistry lab.

Key Features

• Free-Standing Flat Base: This round bottom flask features a reinforced flat base, allowing it to stand upright on any flat surface for easier handling and stability.

• Superior Thermal Resistance: Made from premium 3.3 Borosilicate glass, it can withstand high temperatures and rapid thermal changes during intense heating cycles.

• Uniform Wall Thickness: Engineered with consistent glass distribution to ensure even heating and to prevent stress points that lead to cracking.

• Chemical Inertness: Highly resistant to water, neutral and acid solutions, concentrated acids, and organic substances.

• Reinforced Rim: Features a heavy-duty beaded rim for increased mechanical strength and a secure grip during pouring or stopper insertion.

Applications

• Heating & Boiling: The round bottom flask geometry is perfect for uniform heat distribution, while the flat base makes it compatible with standard laboratory hot plates.

• Chemical Synthesis: Widely used in organic chemistry for reactions, distillations, and the preparation of chemical compounds.

• Liquid Storage: The 250ml capacity and stable base make it an excellent vessel for temporarily storing reagents or prepared solutions.

• Educational Science: A fundamental laboratory & scientific product for teaching distillation and reflux concepts in school and university labs.

Specifications

• Product Name: Round Bottom Flask with Flat Base (Boiling Flask)

• Capacity: 250ml

• Material: 3.3 Expansion Borosilicate Glass

• Base Type: Flat (Free-standing)

• Neck Type: Narrow Neck with Beaded Rim

• Autoclavable: Yes, up to 121°C

• Chemical Resistance:  (High Resistance)