Round Bottom Flask with Ground Glass Joint

Code

The round bottom flask with ground neck is made of borosilicate glass 3.3, known for its excellent thermal and chemical resistance. Ideal for distillation, mixing, and controlled heating in educational and professional laboratories. Complies with DIN, ISO, and USP standards.

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Model
Capacity
Ground Joint
Hole

Ground Neck Round Bottom Flask in Borosilicate Glass 3.3

The round bottom flask is a fundamental laboratory instrument, designed to ensure uniform heat distribution during processes such as distillation, boiling, dissolution, and mixing of chemical substances. Its flat base provides excellent stability for use on stirrers and heating devices.

Made of Borosilicate Glass 3.3

Borosilicate glass 3.3 is the global standard for laboratory glassware. It offers exceptional thermal and chemical resistance, making it ideal for scientific applications. Thanks to its low thermal expansion coefficient, it withstands rapid temperature changes without cracking. It complies with DIN 12347, ISO 4797, and USP standards.

Advantages of Borosilicate Glass

  • Thermal resistance: withstands up to 500 °C without deforming or cracking.
  • Chemical durability: inert to most acids, salts, and solvents.
  • Transparency and purity: allows clear observation of reactions and mixtures.
  • Reliability: non-reactive and impurity-free, ensuring safe experiments.

Recommended Uses

  • Controlled heating and distillation processes.
  • Preparation and mixing of liquid reagents.
  • Teaching and research applications in laboratories and universities.

The standard ground neck ensures compatibility with stoppers, adapters, and other glass components. Available in various capacities to meet different laboratory requirements.

This flask combines precision, durability, and safety — a must-have in any professional or educational laboratory.

Data sheet

Material
Borosilicate Glass
Colour
Clear
Neck Thread
Ground-Glass Neck
Inner diameter neck
45 mm
Neck Shape
Narrow Neck
Body Shape
Spherical Shaped
Graduation
Ungraduated
International Standards
DIN 12394 & USP standard