This 50mL gas collection tube is manufactured from borosilicate 3.3 glass and is designed for the collection and measurement of gases in laboratory settings. One end is sealed while the other is open with a beaded rim. White graduation markings are printed in 0.2mL subdivisions for precise volume readings. Borosilicate 3.3 glass provides strong chemical resistance and can withstand significant thermal stress, with heat tolerances rated at a strain point of 515°C, annealing point of 565°C, and softening point of 820°C.