The use of vacuum ovens is in the following cases:
-Removal of bubbles, for example from epoxy castings, coating with epoxy layers or varnish.
-Flammable materials or bombs like solvents, oxygen removal prevents fire ignition. The solvent that comes out of the oven can be taken out into the air or recycled in a cold trap that is between the oven and a vacuum pump.
-Drying liquids from porous materials is difficult .
-Low down the drying temperature so as not to damage the components of the material
* For example, when drying food so as not to damage the ingredients of the food, dry in a vacuum oven.
* For example, when drying cannabis with ethanol, work with a vacuum oven that does not harm the active plant substance extracted from the cannabis.
* For example when drying plastic or other materials that may be melted.