Horizontal Laminar Air Flow Bench Diagram

Room air in red enters the system from behind the hepa filter.

Horizontal laminar air flow bench diagram.

All units are nrtl listed with met labs to comply with ul 1262. The clean bench provides a class 100 m 3 5 environment. These clean benches provide product protection and were originally designed to provide a particulate free environment for manufacture of semiconductor components. A laminar flow clean bench provides a working environment that has its own filtered air supply.

Horizontal laminar flow hoods. The unique design concept of the lf horizontal laminar flow clean bench consists of separate plenum and table. Advanced horizontal laminar flow station he bz series hood is designed for the handling of materials in a sterile working environment. The direction of air flow may be horizontal or vertical.

A laminar flow cabinet laminar flow bench or laminar air flow hood is a bench or workstation designed to prevent contamination of semiconductor wafers biological samples or any particle sensitive device. Laminar flow hoods are used to control airborne contamination of sterile products during their extemporaneous preparation. Laminar flow hoods are designed to protect samples and parts from particulate contamination. Air is drawn through a hepa filter and blown in a very smooth laminar flow towards the user.

Air flows in a uniform direction with a constant speed within the enclosed bench with little to no crossover air streams. The lf horizontal laminar flow clean bench is a completely self contained multipurpose vibration free clean bench that supplies a laminar flow pattern of hepa filtered air. Horizontal vs vertical laminar flow hoods. 99 99 particle free air is forced in a back to front direction across the work surface.

Horizontal flow hoods are most commonly used with the more costly vertical flow hoods being reserved for agents that may produce an environmental hazard e g. All horizontal laminar flow products are designed to provide product protection by creating a particle free working environment in accordance with eu gmp grade a. Laminar flow cabinets and booths. With horizontal laminar flow clean benches hepa filtered air flows horizontally across the workspace directly toward the user see diagram at end of this chapter.

Laminar flow benches and hoods. A horizontal flow hood requires additional depth to accommodate the rear mount filter fan unit with some additional rear clearance to allow air to enter the system. The bz series of horizontal laminar flow hoods meet or exceed iso 14644 1 federal standard 209e for iso 5 class 100 air and ies recommended practice for laminar flow clean air devices. What is laminar flow bench.