●The flat, circular glass disk is used within laboratory environments to provide a surface for holding or blending small quantities of liquids or powders ●Commonly employed during scientific experiments and various laboratory procedures, such as the evaporation of solvents or the gentle heating of small samples; also serves the purpose of functioning as a lid for containers like beakers and evaporating dishes ●Includes a set of 10 watch glasses, each featuring a diameter of 100 mm and a thickness measuring 2 mm ●Crafted from borosilicate glass, smooth and transparent surface; please note: not for direct heating ●Guaranteed after-sales service: if received defective or damaged item, please contact us. We will definitely help you solve the problem until you are satisfied