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. Can Laminar Flow Pass Boxes be used for animal research facilities?

Yes, Laminar Flow Pass Boxes are suitable for animal research facilities where maintaining a sterile environment is essential. These pass boxes help prevent cross-contamination between areas by creating a clean zone during the transfer of cages, tools, or specimens. The use of HEPA or ULPA filters ensures that airborne particles and biological contaminants are effectively removed, supporting biosafety and hygiene requirements.

2. Can a Laminar Flow Pass Box be used in electronics manufacturing?

Laminar Flow Pass Boxes are commonly used in electronics manufacturing to protect sensitive components from dust and electrostatic discharge. In environments where microchips, circuit boards, or semiconductors are handled, contamination can cause defects or failures. The unidirectional airflow and high-efficiency filtration in the pass box help preserve the integrity of delicate components during transfer between controlled areas.

3. How do you install a cleanroom pass box?

Installing a cleanroom pass box requires precision to ensure proper function and sealing. The typical steps include: - Identifying and preparing the wall location with accurate cutouts - Positioning the pass box and anchoring it securely - Sealing all gaps to maintain pressure integrity - Connecting electrical or airflow systems if applicable A professional installation ensures the pass box performs without compromising the cleanroom environment.

4. How do Laminar Flow Pass Boxes contribute to maintaining ISO 14644 standards?

Laminar Flow Pass Boxes contribute to ISO 14644 compliance by supporting the cleanroom’s particle control strategy. They help maintain the designated cleanliness class by preventing airborne contaminants from entering clean zones during material transfer. With their filtered laminar airflow and interlocking door mechanisms, they reduce the risk of contamination and help preserve environmental stability, which is vital for operations in ISO-classified cleanrooms.

5. What certifications are required for a cleanroom pass box?

Cleanroom pass boxes often need to meet certifications and standards depending on industry requirements: - ISO 14644 compliance for particle control - CE marking for European regulatory conformity - GMP certification for pharmaceutical and healthcare use - UL certification for electrical safety (if applicable) These certifications ensure the pass box is suitable for use in regulated environments and meets performance and safety standards.

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

Calibration of a Laminar Flow Pass Box ensures it functions within design specifications and maintains cleanliness. This process includes verifying airflow velocity using anemometers, inspecting filter integrity, and checking for leaks. Calibration should be performed regularly, especially after filter replacement or maintenance, to ensure optimal airflow and contamination control in accordance with cleanroom standards.

7. Can a Laminar Flow Pass Box be used in hazardous environments?

A Laminar Flow Pass Box is not typically designed for use in hazardous or explosive environments unless specifically engineered with materials and features to meet those conditions. Standard units lack explosion-proof components or containment features needed for volatile substances. In such cases, specialized containment pass boxes with added safety controls and certifications are required to ensure operational safety.

8. How do you monitor the performance of a Laminar Flow Pass Box?

Monitoring a Laminar Flow Pass Box’s performance involves routine checks and real-time feedback mechanisms: - Airflow velocity sensors to measure laminar flow consistency - Differential pressure gauges to ensure correct pressure gradients - Periodic particle count testing to verify filter performance These tools and tests help identify issues early and ensure compliance with cleanroom protocols.

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

A Laminar Flow Pass Box offers superior contamination control compared to a traditional pass box. While traditional models are typically static and lack filtration, laminar flow models incorporate HEPA or ULPA filters and directional airflow to create a sterile internal environment. This makes them more suitable for high-precision industries like pharmaceuticals, semiconductors, and biotechnology.

10. What are the specifications for a cleanroom pass box?

Cleanroom pass box specifications vary by application but commonly include: - Material: Stainless steel (304 or 316 grade) - Filtration: HEPA/ULPA filters with ≥99.99% efficiency - Interlock system: Electromagnetic or mechanical door interlock - Airflow type: Static or laminar flow These features ensure contamination control, structural integrity, and user safety in cleanroom environments.

11. Can Laminar Flow Pass Boxes be used in medical cleanrooms?

Yes, Laminar Flow Pass Boxes are ideal for medical cleanrooms where sterility is critical. They prevent contamination during the transfer of instruments, pharmaceuticals, or samples between clean zones. The filtered laminar airflow ensures that airborne pathogens and particles are minimized, supporting infection control and sterile processing procedures required in healthcare and diagnostic facilities.

12. What are the typical sizes of cleanroom pass boxes?

Cleanroom pass boxes come in various sizes to accommodate different applications. Standard external dimensions typically range from: - Small: 18" x 18" x 18" - Medium: 24" x 24" x 24" - Large: 36" x 36" x 36" Custom sizes are also available based on operational requirements, item size, and cleanroom layout.

13. What safety features are included in a cleanroom pass box?

Cleanroom pass boxes incorporate several safety features to protect both users and the cleanroom environment: - Electromagnetic interlocking doors to prevent both doors from opening simultaneously - UV sterilization lamps (optional) for microbial control - Audible and visual door status indicators - Smooth, easy-to-clean surfaces to reduce particle buildup These features ensure safe operation and uphold cleanroom protocols.

14. How does a Laminar Flow Pass Box contribute to cleanroom airflow efficiency?

By introducing filtered, unidirectional airflow, a Laminar Flow Pass Box minimizes the risk of particles entering the cleanroom during transfers. This controlled airflow prevents turbulence and helps maintain pressure balance within the cleanroom. As a result, it supports consistent air quality and reduces strain on the room’s primary HVAC system, contributing to overall airflow efficiency.

15. Can a Laminar Flow Pass Box be used for temperature-sensitive materials?

Yes, a Laminar Flow Pass Box can be used for temperature-sensitive materials if designed accordingly. Some models include insulated panels or integrated cooling features to protect contents from thermal fluctuations during transfer. It is important to ensure the internal environment remains stable, especially when handling pharmaceuticals, biological samples, or electronic components sensitive to heat.