Heavy Wall Test Tubes, Pyrex, 125 x 16 mm

The heavier wall thickness of these test tubes provides them with extra mechanical strength for improved user safety.
• Conforms to ISO 4142
• Test tubes with a heavy wall to provide extra mechanical strength
• Robust construction reduces possibility of breakages: - Lower replacement costs - Improved user safety
• Pyrex® borosilicate glass for high resistance to thermal shock and chemical attack