A circular piece of glass made for a wide variety of uses in the lab!
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Watch glasses are a circular piece of glass handy for a multitude of purposes, including: evaporating liquids, a container for powders and small items during weighing, a beaker cover and much more.
Although watch glasses are commonly used in chemistry, they were originally named because of their similarity to the glass in old fashioned pocket watches.
Larger sizes are available indivdually, and smaller ones are sold in packs. See below for details:
What You Get
1, 10 or 12 (Depending on Size) Watch Glasses