Purifier HEPA filtered enclosures protect the user from agents that require biosafety level 1, 2 or 3 containment but no product protection. With ergonomic air foil with aerodynamic clean-sweep airflow openings; upper dilution air supply; zone-perforated rear baffle; side-entry air foils; and upper containment sash foil.

• Nominal inflow velocity of 75 to 105 fpm
• Intrinsically-safe, negative pressure design
• Minihelic pressure gauge and low discharge volume
• Epoxy-coated aluminium and steel construction