Simax Heavy Duty Test Tubes with Rim – 75 × 10mm, 1.5mm Wall (Box of 100)

The Simax Heavy Duty Rimmed Test Tubes (75 × 10mm) are manufactured from premium 3.3 borosilicate glass and form part of the trusted Simax test and boiling tube range. Designed for durability and consistent performance, these test tubes feature a reinforced rolled rim and uniform wall thickness, ensuring safe handling and reliable results in educational laboratory settings.

With a heavy‑duty 1.5mm wall thickness, these test tubes provide increased strength and durability, making them particularly suitable for repeated heating, boiling, and more demanding practical work. The borosilicate glass construction offers outstanding thermal shock resistance and excellent chemical resistance, ideal for busy school science labs.

Supplied in a box of 100, these compact heavy‑duty test tubes are perfect for class sets, routine experiments, and investigations where added robustness is required. The clear glass allows students to easily observe reactions, colour changes, and precipitates throughout experiments.

Key Features

• Box of 100 heavy‑duty rimmed test tubes
• Dimensions: 75mm length × 10mm diameter
• Heavy‑duty 1.5mm wall thickness for increased strength
• Manufactured from 3.3 borosilicate glass
• Rolled rim for safer handling and reduced chipping
• Designed for consistent heat transfer
• Excellent resistance to thermal shock
• High chemical resistance
• Uniform wall thickness for reliable laboratory performance

Ideal for School Science Lessons

Ideal for KS3, GCSE, and A Level science lessons, these Simax heavy‑duty borosilicate test tubes are especially suited to practical work that involves repeated heating or more rigorous handling. They are commonly used for:

• Heating and boiling small liquid samples
• Observing chemical reactions and colour changes
• Carrying out qualitative analysis tests
• Demonstrating safe handling of laboratory glassware
• Supporting experiments requiring extra‑durable equipment

Strong, reliable, and designed for repeated classroom use, these Simax heavy‑duty rimmed test tubes are an excellent choice for safe, effective, and engaging science teaching.