An isolator includes : a chamber including a working chamber in which a work is performed by a worker, and a storage chamber provided under the working chamber in communication with an opening formed in a bottom plate of the working chamber, the chamber being configured to isolate the working chamber and the storage chamber from an exterior while in a state where airtightness is maintained and a lifting device configured to support, in the storage chamber, an experimental device to be used in the working chamber, the lifting device being capable of lifting and lowering the experimental device from the storage chamber to the working chamber and from the working chamber to the storage chamber.
