Simax Heavy Duty Test Tubes with Rim – 150 × 18mm, 1.8mm Wall (Box of 100)

The Simax Heavy Duty Rimmed Test Tubes (150 × 18mm) are premium laboratory test tubes manufactured from high‑quality 3.3 borosilicate glass. Part of the Simax test and boiling tube range, these tubes are engineered for strength, safety, and consistent performance in school and educational laboratories. Each tube features a reinforced rolled rim and uniform wall thickness for reliable handling and long‑term durability.

With a heavy‑duty 1.8mm wall thickness, these test tubes provide excellent resistance to breakage, making them ideal for repeated heating, boiling, and demanding practical work. Borosilicate glass offers outstanding thermal shock resistance and superior chemical resistance, ensuring safe use with a wide range of laboratory chemicals.

Supplied in a generous box of 100, these large‑capacity, heavy‑duty test tubes are ideal for class sets, practical investigations, and demonstrations. The clear glass construction allows students to easily observe colour changes, reactions, precipitates, and gas evolution during experiments.

Key Features

• Box of 100 heavy‑duty rimmed test tubes
• Dimensions: 150mm length × 18mm diameter
• Heavy‑duty 1.8mm wall thickness for maximum durability
• Manufactured from 3.3 borosilicate glass
• Rolled rim for safer handling and reduced risk of chipping
• Designed for maximum heat transfer
• Excellent resistance to thermal shock
• High chemical resistance
• Uniform wall thickness for consistent laboratory performance

Ideal for School Science Lessons

Ideal for KS3, GCSE, and A Level science lessons, these Simax heavy‑duty borosilicate test tubes are particularly suitable for practical chemistry and general science experiments that involve direct heating or larger sample volumes. They are ideal for:

• Heating and boiling larger quantities of liquids
• Clearly demonstrating chemical reactions to students
• Observing precipitation, gas evolution, and colour changes
• Carrying out qualitative and comparative tests
• Teaching correct safe handling and heating techniques with robust laboratory glassware

Exceptionally strong and reliable, these Simax heavy‑duty rimmed test tubes provide long‑lasting performance and help support safe, effective, and engaging practical science teaching in educational environments.