Watch glasses are highly functional laboratory glassware that have a variety of uses in the classroom or lab.
The concave dishes work well as lids for flasks and beakers, or for holding small samples for observation under a low-power microscope. Also useful for evaporating liquids off of samples (i.e. growing seed crystals). They can be used for making lenses of ice or other liquids.
Sturdy watch glasses 2.0 mm thick construction, ground edge with polished surface.