In this video we make a
desiccator bag for thoroughly drying hygroscopic chemicals. Some chemicals are hygroscopic, meaning they absorb water from the air and become moist, mushy, or even liquefy. For highly accurate work and good results in experiments the chemicals should be dried before use. A laboratory device for doing this is called a
desiccator. Laboratory
desiccators use vacuum and drying agents. A simple home
desiccator can be made from an airtight resealable plastic bag and a hygroscopic drying agent like sodium hydroxide. Simply get a plastic container and fill it up with sodium hydroxide, then place it inside the bag along with a container of the chemical you intend to dry. Seal it up and wait. Thorough drying can take weeks. Sometimes you might run into the problem where the t...
