Pack of 10 Watch glass

A watch glass is a shallow, circular, concave piece of glassware, which have a variety of uses in the laboratory, including Evaporation; Weighing; Covering and Crystallization. Their flat surface and shallow depth make them useful for a range of applications in chemistry, biology, and other scientific disciplines.

弧面玻璃片是一種淺而圓的凹形玻璃器皿，在實驗室中有多種用途，包括蒸發、稱重、覆蓋和結晶。其平坦的表面和較淺的深度使其可應用在化學、生物和其他科學學科中。