Ai 20L SolventVap rotary evaporators feature locking swivel casters, on all four legs, making repositioning and moving a breeze. In addition to ease of operation, our systems also provide key safety features like dry run protection, over-temp shut offs, and built-in circuit breakers, to ensure safe and reliable performance. Ai 20L rotary evaporators are built to provide powerful and efficient evaporation across numerous applications.