Vacuum desiccators are used to store and protect critical materials or laboratory components. Many models of laboratory desiccators are compatible with gas systems used to purge oxygen and replace it with an inert gas such as nitrogen. Often used in laboratories to protect sensitive electronics, laboratory instrument parts, samples, and reference materials, desiccators are critical for many laboratories. Many desiccators also include protective films or dyes in their construction to protect the contents from UV rays. When comparing models of vacuum desiccators ensure that the size is sufficient to store all of your necessary items, multiple sizes as well as custom sizes are available from several manufacturers. For materials where oxidation is a concern, look for a desiccator that is airtight and can be purged with an inert gas.