The Beakers, test tubes, and Erlenmeyer Flasks are made from borosilicate 3.3 glass.  It is made to be durable, chip resistant, thermal shock resistant, and chemically resistant even at temperatures over 100 degrees celcuis for long periods of time.  The glass meets international standards including ISO9001 and is the equivalent of the Kimax and Pyrex brands.

The graduated cylinders, filtering flasks, and volumetric flasks are from a borosilicate glass that is more chemical resistant.  It also meets international standards including ISO9001.