TEST TUBE 18X150 HEAVY WALL, Pack of 100

TEST TUBE 18X150 HEAVY WALL
 
Heavy wall ? extra strength
The heavier wall thickness of these test tubes provide these tubes 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