Airflow Regime: Recirculating airflow

• Dynamic airflow provides an air barrier to prevent contaminants from entering into critical controlled environments during material transfers
  

• Vertical purging to trace any contaminants that have potentially entered post material transfer.

• Unit operates with a recirculating airflow and on-board fans hence, external ducting is not required.

• Support stand or Base box

• Onboard LED light and/or UV light

• Internal shelves

• Door release buttons

• Interlock release rocker switches

• Buzzer system (to alert personnel on the opposite side during material transfer)

• Intercom system

• Fan fault alarms with customized blowers

• Lead shielding

• Roller Conveyors (only for DFLH)

• Auto sliding PVC doors (only for DFLH)

• Rails to hang gowns (only for DFLH)

1. What is the filtration system in a Laminar Flow Pass Box?

The filtration system in a Laminar Flow Pass Box typically uses HEPA or ULPA filters to remove particles from the airflow. These high-efficiency filters are designed to capture 99.99% or more of airborne particles as small as 0.3 microns. The clean, filtered air is then directed in a unidirectional flow, maintaining a sterile environment and preventing contamination of the cleanroom.

2. Are Laminar Flow Pass Boxes suitable for pharmaceutical applications?

Yes, Laminar Flow Pass Boxes are highly suitable for pharmaceutical applications. They provide a sterile transfer method for materials into and out of controlled environments, ensuring that pharmaceutical products remain uncontaminated. The use of HEPA or ULPA filters ensures the removal of harmful particles, meeting the strict contamination control requirements of the pharmaceutical industry.

3. How do you ensure proper sealing for a cleanroom pass box installation?

Proper sealing for a cleanroom pass box installation is essential to prevent leaks and maintain sterile conditions. To ensure proper sealing: - Check the gasket and door seals for any gaps or damage. - Use airtight construction materials that are compatible with the cleanroom environment. - Ensure the pass box is securely integrated into the cleanroom wall to maintain the pressure differential. A well-sealed pass box helps maintain the integrity of the cleanroom environment and prevents contamination.

4. How do you calibrate a Laminar Flow Pass Box?

Calibrating a Laminar Flow Pass Box involves several steps to ensure that airflow and filtration efficiency meet the required standards. The process typically includes: - Measuring airflow velocity with an anemometer to ensure it meets specifications. - Conducting particle count tests to verify the effectiveness of HEPA or ULPA filters. - Checking the laminar airflow direction to prevent turbulence and contamination. Regular calibration ensures the pass box continues to operate efficiently and maintain a sterile environment.

5. What materials are used in Laminar Flow Pass Boxes?

Laminar Flow Pass Boxes are typically constructed from high-quality materials to ensure durability and ease of cleaning. Common materials used include: - Stainless steel for the body and frame, which provides corrosion resistance and easy cleaning. - Tempered glass or transparent acrylic for the viewing panels, allowing visibility into the pass box. - High-efficiency filters (HEPA or ULPA) for effective air purification. These materials help maintain the pass box’s performance while ensuring compliance with cleanroom standards.

6. Can Laminar Flow Pass Boxes be used for material transfer in hospitals?

Yes, Laminar Flow Pass Boxes can be used for material transfer in hospitals. They provide a controlled, sterile environment for transferring medical supplies, equipment, and pharmaceuticals without contaminating the hospital’s clean areas. The pass box ensures that airborne contaminants are filtered out, which is essential in maintaining sterile conditions in areas such as operating rooms and pharmacies.

7. What is the difference between a pass box and a transfer hatch?

The main difference between a pass box and a transfer hatch lies in their functionality and application: - A pass box is designed to maintain a sterile environment during material transfer by using filtration systems and laminar airflow. - A transfer hatch is typically a simple opening between rooms without active air filtration, providing a basic barrier for material transfer. While a pass box ensures contamination control, a transfer hatch does not provide the same level of protection.

8. Are Laminar Flow Pass Boxes fire-resistant?

Laminar Flow Pass Boxes are typically made from fire-resistant materials such as stainless steel, which provides a level of fire resistance. However, the overall fire resistance of the pass box depends on the specific design and materials used. It is essential to ensure that the pass box meets local fire safety regulations and is constructed with fire-resistant components, especially in environments where fire hazards may be present.

9. What is the difference between horizontal and vertical Laminar Flow Pass Boxes?

The primary difference between horizontal and vertical Laminar Flow Pass Boxes is the direction of the airflow: - In a horizontal Laminar Flow Pass Box, the airflow moves from one side to the other, typically from the back to the front. - In a vertical Laminar Flow Pass Box, the airflow moves vertically, from top to bottom. The choice between horizontal and vertical flow depends on the cleanroom layout and specific material transfer needs.

10. How does a cleanroom pass box prevent contamination?

A cleanroom pass box prevents contamination by using a high-efficiency filtration system, such as HEPA or ULPA filters, to clean the air before materials are transferred into the cleanroom. The box is designed to provide a sealed, controlled environment that minimizes the risk of contamination during the transfer process. Additionally, the pass box typically features interlocking doors that ensure only one door can be open at a time, preventing cross-contamination.

11. How does a Laminar Flow Pass Box contribute to compliance with cleanroom standards?

A Laminar Flow Pass Box contributes to compliance with cleanroom standards by ensuring that the transfer of materials into and out of the cleanroom does not compromise its sterile environment. The box utilizes HEPA or ULPA filtration systems to remove particles and pathogens, and its sealed construction maintains the integrity of the cleanroom’s air quality. By meeting the requirements set by standards such as ISO 14644-1, it helps maintain the cleanliness level necessary for sensitive processes.

12. How does a Laminar Flow Pass Box compare to a traditional pass box?

A Laminar Flow Pass Box differs from a traditional pass box in its design and functionality. While a traditional pass box is typically a simple, enclosed space for transferring materials, a Laminar Flow Pass Box includes a filtration system and laminar airflow to maintain sterile conditions. This additional feature makes Laminar Flow Pass Boxes more suitable for environments that require high levels of contamination control, such as pharmaceutical manufacturing and laboratories.

13. How are cleanroom pass boxes tested for quality?

Cleanroom pass boxes are tested for quality through several methods to ensure they meet performance standards: - Airflow testing to verify the efficiency of the laminar flow system. - Particle count tests to assess the effectiveness of the HEPA or ULPA filters. - Leak tests to ensure proper sealing and airtight construction. These quality tests help ensure that the pass box will function effectively and maintain a sterile environment in the cleanroom.

14. What is the difference between a Laminar Flow Pass Box and a standard pass box?

The difference between a Laminar Flow Pass Box and a standard pass box lies in the additional filtration and airflow control. A Laminar Flow Pass Box uses a laminar airflow system combined with HEPA or ULPA filters to ensure that airborne particles are removed before materials are transferred into the cleanroom. In contrast, a standard pass box lacks this filtration system and typically only serves as a basic transfer mechanism without ensuring contamination control.

15. How do you install a Laminar Flow Pass Box in a wall?

Installing a Laminar Flow Pass Box in a wall requires precise planning and execution. The steps typically include: - Selecting an appropriate location within the cleanroom for integration with the wall. - Cutting the wall to fit the dimensions of the pass box and ensuring proper alignment. - Securing the pass box in place and sealing around the edges to prevent any gaps. - Connecting the airflow system and testing for leaks to ensure airtight operation. Proper installation ensures that the pass box functions as intended, maintaining cleanroom standards.