Cabinet #7
Watch Glasses  Glass Rods  |
Watch Glass and Glass Rods A watch glass is a piece of glass, usually curved, is placed over beakers, flasks, crucibles, or other containers in which reactions that could produce flying material are occurring. The watch glass provides safety and the ability to watch the reaction at the same time. A glass stirring rod is used to stir reactions to
increase
the rate of reaction and to insure that all material available to react
do. A stir rod can also be used to help control the pouring of a
liquid. By using a stir rod during pouring, the liquid is
encouraged to travel down
the rod and into the intended container. |
Evaporating Dishes  |
Evaporating Dish An evaporating dish is used to evaporate solutions in order to recover solid materials that are dissolved within the solution. Evaporating dishes can be heated to increase evaporation, however, higher temperature may cause the dish to crack therefore high heat should not be used. If high heat is indicated, a crucible should be used. |
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