What is the function of the watch glass
The watch glass is made of glass and has a round shape with a slightly concave center, similar to an evaporating dish. It can be used to do some work of evaporating liquid, it can increase the surface area of the liquid, thus speeding up the evaporation. But it can’t be heated like an evaporating dish. It can be used as a lid to cover the evaporating dish or beaker to prevent dust from falling into the evaporating dish or beaker; it can be used as a container to temporarily hold solid or liquid reagents for easy access; it can be used as a carrier to carry pH test paper, so that drops The acid or lye on the test paper does not corrode the test bench.
Post time: Jun-30-2022
