A dessicator is a type of laboratory equipment that is used for drying and preserving moisture-sensitive materials. It is typically a glass container that is airtight and has a removable lid, with a valve or stopcock that allows for control of the internal pressure. Dessicators are commonly used in chemistry, biology, and other scientific fields where it is necessary to store or dry materials that are sensitive to moisture.
The most common types of dessicators are vacuum dessicators and desiccant dessicators. Vacuum dessicators use a vacuum pump to remove air from the container, creating a low-pressure environment that encourages evaporation of any moisture present in the materials. Desiccant dessicators use a desiccant material, such as silica gel or calcium sulfate, to absorb moisture from the air inside the container.
Dessicators are available in various sizes and shapes, depending on the specific needs of the user. Some dessicators are designed to fit onto a laboratory benchtop, while others are designed to be placed on a shelf or in a refrigerator.
When using a dessicator, it is important to make sure that the container is completely dry and clean before placing materials inside. The valve or stopcock should be adjusted to the appropriate level to maintain the desired pressure inside the container. Additionally, desiccant materials should be replaced periodically to ensure that they are still effective at absorbing moisture