Labglass Round Bottom Flask Wide Neck 500ml – Borosilicate Glass [2639]

The Labglass 500ml Wide Neck Round Bottom Flask is a robust and versatile boiling flask manufactured from high‑quality 3.3 borosilicate glass. Designed for safe and efficient heating, the round bottom shape promotes even heat distribution, while the wide neck allows easier filling, cleaning, and insertion of larger apparatus.

The flask features a reinforced beaded rim to provide additional strength and a secure seal when used with rubber stoppers or laboratory fittings. Its bubble‑free construction offers excellent resistance to thermal shock and chemical attack. Manufactured in accordance with ISO 24450, this flask delivers consistent quality and dependable performance in educational and laboratory environments.

With a practical 500ml capacity, this wide‑neck round bottom flask is ideal for heating, boiling, mixing, and demonstration experiments commonly carried out in school and college science laboratories.

Key Features

• 500ml capacity round bottom boiling flask
• Manufactured from durable 3.3 borosilicate glass
• Wide neck for easy filling, cleaning, and equipment access
• Beaded rim for added strength and secure stopper fitting
• Excellent resistance to heat, chemicals, and thermal shock
• Bubble‑free glass for clarity and durability
• Conforms to ISO 24450 laboratory standards

Compatible Rubber Stoppers

• 2748 – Solid rubber stopper, 40mm
• 2749 – 1‑hole rubber stopper, 40mm
• 2750 – 2‑hole rubber stopper, 40mm

Ideal for School Science & Chemistry Lessons

The Labglass 500ml Wide Neck Round Bottom Flask is ideal for KS3, GCSE, and A‑Level chemistry lessons, where controlled heating and clear observation are essential. The wide neck makes it particularly suitable for practical work involving thermometers, delivery tubes, or repeated handling by students.

• Boiling and heating liquids evenly
• Carrying out reflux and distillation experiments
• Mixing and heating reaction mixtures
• Teacher‑led demonstrations of heat transfer
• Teaching correct handling of round bottom laboratory glassware

Strong, reliable, and manufactured to recognised international standards, the Labglass 500ml Wide Neck Round Bottom Flask is an essential laboratory item that supports safe, effective, and high‑quality science teaching.