Three piece Beaker set made of high quality heavy duty borosilicate 3.3 glass. Includes three low form beakers with 250ml 100ml & 50ml capacities. Beakers feature white printed graduations beaded rims and spouts for easy pouring. Uniform thick walls provide excellent strength against breakage. Measurements: (250mL) 3.8 tall 2.75 outer diameter 2.5 inner diameter. 3mm wall thickness. (100mL) 2.9 tall 2 outer diameter 1.8 inner diameter. 2.5mm wall thickness. (50mL) 2.4 tall 1.75 outer diameter 1.6 inner diameter. 2mm wall thickness. Beaker set is packaged in a custom fit thick foam casing for safe storage and worry free transport. Microwavable and autoclavable with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks. Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point 515C | Annealing Point 565C | Softening Point 820C.