Open RABS (oRABS)

Overview

The Fenggu Open RABS (Restricted Access Barrier System) surrounds an aseptic filling or processing line with a rigid physical barrier and positive-pressure Grade A laminar airflow, separating the operator in the surrounding background environment from the critical zone. Unlike a fully closed isolator, an open RABS exchanges air with the surrounding cleanroom rather than fully sealing the process, which suits lines that need more frequent operator intervention while still holding Grade A conditions over the product.

Operators reach into the critical zone through sealed glove ports rather than opening the barrier, so the risk of contamination from human presence is greatly reduced compared with an open cleanroom line. The rigid SUS304 construction and defined air overspill design keep the barrier's protective airflow pattern stable through normal line operation and intervention.

Key Features

• Grade A / ISO 5 unidirectional laminar airflow over the entire critical filling zone
• Positive-pressure barrier with controlled air overspill into the surrounding Grade B/C background
• Rigid SUS304 barrier construction with glove-port access for routine intervention
• Suited to lines requiring frequent operator interaction while holding Grade A conditions
• Integrates with existing filling-line layouts and background cleanroom HVAC
• HEPA supply-air filtration, PAO-tested ≥ 99.9990% @ 0.3 μm