RABS

Restricted access barrier system: a rigid wall with glove ports around a Grade A zone, operated within a Grade B room. Operators work through gloves instead of reaching directly into the critical zone, which reduces contamination from people. An active RABS has its own air supply; a closed RABS is not opened during processing. RABS sit between conventional cleanrooms and isolators in terms of protection and are widely used for aseptic filling.