1. Commonly used specifications are 50mL, 100mL, 250mL, etc., but the
beaker is not required to measure liquid.
2. It should be heated on the asbestos net to make it evenly heated; when
heating, there should be no water droplets on the outer wall of the beaker.
3. When heating the liquid, do not exceed 2/3 of the volume of the beaker,
generally 1/2 of the volume of the beaker is appropriate.
4. During the dissolution or dilution process, do not touch the bottom or wall
of the cup when stirring with a glass rod.
5. When heating corrosive chemicals, a watch glass can be placed on the mouth
of the beaker to prevent liquid from spilling. A beaker is a common laboratory
glassware, usually made of glass, plastic or heat-resistant glass. The beaker
has a cylindrical shape with a notch on one side of the top for easy pouring of
liquid. Some beakers are also marked with scales on the outer wall to give a
rough estimate of the volume of liquid in the beaker.
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