·The thickness of beaker is uniform, and there is no special distortion during the production process; ·Beakers surfaces are smooth and no impurities; The edges are intact and no cracks. They will not affect the numerical result of measuring the liquid. ·Each beaker is engraved with a standard scale that allows you to accurately measure the volume of the liquid. Clear scales help you to read values quickly and without errors. ·This glass beaker is resistant to high temperatures and corrosion, so you don't have to worry about chemical reactions with liquids. You can save the cost by cleaning and reusing beakers. ·Widely Uses: Beaker sets can be used in the laboratory, classroom teaching, etc.