Labglass Conical Flask 25ml, Narrow Neck – Borosilicate Glass [2644]

The Labglass 25ml Conical Flask, also known as an Erlenmeyer flask, is a compact and reliable piece of laboratory glassware manufactured from high‑quality 3.3 borosilicate glass. Featuring a narrow neck, this flask is ideal for mixing, heating, and handling small volumes of liquids with reduced risk of splashing or evaporation.

The conical shape allows efficient swirling and mixing of contents without the need for a stopper, while the narrow neck provides controlled pouring and compatibility with standard laboratory accessories. The flask’s bubble‑free construction offers excellent resistance to thermal shock and chemical attack. Manufactured to conform with ISO 1773, it delivers consistent quality suitable for routine educational laboratory use.

With a small 25ml capacity, this flask is ideal for microscale experiments, reagent preparation, and demonstrations where precision and control are required.

Key Features

• 25ml capacity conical (Erlenmeyer) flask
• Manufactured from durable 3.3 borosilicate glass
• Narrow neck for controlled pouring and reduced evaporation
• Conical shape allows efficient mixing by swirling
• Excellent resistance to heat, chemicals, and thermal shock
• Bubble‑free glass for clarity and durability
• Conforms to ISO 1773 laboratory standards

Compatible Rubber Stoppers

• 1984 – Solid rubber stopper, 17mm
• 8979 – 1‑hole rubber stopper, 17mm

Ideal for School Science & Chemistry Lessons

The Labglass 25ml Conical Flask is ideal for KS3, GCSE, and A‑Level science lessons, particularly in chemistry where small‑volume handling and controlled mixing are required. Its compact size makes it especially suitable for student practical work and introductory laboratory techniques.

• Mixing and heating small quantities of liquids
• Conducting microscale chemistry experiments
• Preparing reagents and reaction samples
• Practising safe swirling and mixing techniques
• Teaching correct handling of conical laboratory glassware

Compact, durable, and manufactured to recognised international standards, the Labglass 25ml Narrow Neck Conical Flask is an essential laboratory item for safe, accurate, and effective science teaching.