Description

This Borosilicate 3.3 glass test tube comes with a side arm designed into it and is 6″ in total length with a .75″ diameter. The side arm is 1″ in length and has a diameter of 1/8″ at its opening.
Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C.