You'll get a reaction every time with this set of 12 or 24 Test Tubes with Screw Caps!
 
These test tubes with screw caps are perfect for teaching students, young and old, about a wide variety of chemical reactions and other assorted experiments.
 
Made from a clear borosilicate glass, the test tubes allow students to monitor and observe during experiments, and are perfectly capable of withstanding the high temperatures of Bunsen burners. The test tubes also include Bakelite screw caps with rubber liners to store samples and leave experiments to be observed at a later date without being tainted from any external contaminants.
This set of 24 test tubes is an essential addition to both primary and secondary school science labs.
The test tubes measure 25 x 150mm and are supplied in a set of 12 or 24.