Simax Heavy Duty Test Tubes with Rim – 125 × 16mm, 1.8mm Wall (Box of 100)

The Simax Heavy Duty Rimmed Test Tubes (125 × 16mm) are premium‑quality laboratory test tubes made from robust 3.3 borosilicate glass. Designed for demanding laboratory environments, these test tubes feature a strengthened rolled rim and uniform wall thickness, ensuring consistent performance, durability, and safe handling during practical work.

With a heavy‑duty 1.8mm wall thickness, these test tubes offer exceptional strength and resistance to breakage, making them ideal for repeated heating, boiling, and rigorous experimental use. The borosilicate glass construction provides excellent thermal shock resistance and outstanding chemical resistance, supporting long‑term use in school laboratories.

Supplied in a convenient box of 100, these heavy‑duty test tubes are perfect for demonstrations, specialist experiments, or situations where increased durability is essential. The clear glass allows easy observation of reactions, colour changes, and precipitates throughout experiments.

Key Features

• Box of 100 heavy‑duty rimmed test tubes
• Dimensions: 125mm length × 16mm diameter
• Heavy‑duty 1.8mm wall thickness for maximum durability
• Manufactured from 3.3 borosilicate glass
• Rolled rim for safer handling and reduced chipping
• Designed for efficient heat transfer
• Excellent thermal shock resistance
• High chemical resistance
• Uniform wall thickness for consistent laboratory results

Ideal for School Science Lessons

Well suited to KS3, GCSE, and A Level science lessons, these Simax heavy‑duty borosilicate test tubes are ideal for experiments involving direct heating and more robust handling. They are particularly useful for:

• Heating and boiling moderate volumes of liquids
• Demonstrating chemical reactions safely and clearly
• Observing reaction rates, colour changes, and precipitates
• Teaching correct safe heating techniques with glassware
• Supporting investigations requiring extra‑durable laboratory equipment

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