Cabinet #1
Beakers   |
Beakers Glass or plastic, beakers are cup-like containers that are used to hold liquids and solids. Chemical reactions are often carried out in beakers as long as the temperatures do not become high. If a glass beaker is to be heated, it must be made of Pyrex or other heat resistant glass. Beakers can range in size from 10 mL to 5 L. Even though beakers appear to be marked for measuring volume, the possibility of errors in those measurements make beakers bad choices for specific volume measurements. However, if an experiment called for approximate volumes without the need for exact measurements, the beaker would be sufficient. Find out more about beakers at:
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Erlenmeyer Flask  Volumetric Flask  |
Flasks Glass or plastic, flasks are similar to beakers, however, flasks have a much smaller opening then the larger part of the equipment. Because of the smaller neck and opening, flasks are excellent vessels for mixing and swirling. Like beakers, chemical reactions can be conducted in flasks, but if the flask is to be heated, appropriate heat resistant glass is required. Flasks vary in their ability to measure the volume of liquids. Flat-bottom (Erlenmeyer) and round-bottom flasks are marked similarly to beakers and therefore are not good measurement tools. However, volumetric flasks are individually marked during the creation process and are accurate for one specific measurement. Therefore, volumetric flasks are often used in making solutions that must have specific concentrations. Find out more about erlenmeyer flasks at: Find out more about volumetric flasks at: |
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