These Simax glass heavy wall test tubes are ideal for science experiments in primary, secondary, and college settings, offering durability and reliability for frequent classroom use. Made from high-quality borosilicate glass, they are designed to withstand high temperatures and resist chemicals, making them suitable for a wide range of practical investigations.

• Made from borosilicate glass 3.3 for excellent heat and chemical resistance
• Dimensions: 24mm diameter x 150mm length
• Heavy wall thickness: 1.8mm for added strength
• Pack of 50 test tubes, each with a rim for easy handling
• Compatible with size 19 bungs (B8A82594)