isolator

noun3

1. •
   An electrical device that detects short circuits and isolates them.
2. •
   A device that isolates something from the surrounding environment to keep it sterile.
3. •
   A transparent box for holding small live animals.

   • Filters on isolators or isolated room. Isolators: transparent boxes where small animals are contained within or outside a cage; for large animals, isolated rooms may be more appropriate. — 2009