Overview
The document describes the specifications and functionalities of a Material Transfer Hatch, commonly known as a Pass Box Unit, designed for clean room environments. It emphasizes protection, safety, and reliability, adhering to Class 3 - EN ISO 14644-1 standards.

Working Principles
The transfer hatch can operate under both negative and positive pressure conditions without compromising safety and cleanliness. The pressure setup depends on the clean room layout or specific standard requirements. Key pressure configurations include:

• Positive Step of Pressure: Inside pressure is higher than the non-clean side but lower than the clean side.
• Overpressure: Inside pressure is higher than both non-clean and clean side areas.
• Well of Pressure: Inside pressure is lower than both non-clean and clean side areas.

Technical Specifications
The unit is constructed from stainless steel AISI 304L with a Scotch Brite finish for easy cleaning. Key features include:

• Internal surfaces with rounded corners and a perforated work surface for laminar flow.
• Glass doors made from 10 mm thick safety glass with stainless steel hinges.
• Class H14 HEPA filter with 99.995% efficiency for particles down to 0.12 µm.
• Recessed control box and functional backlit switches for operation.

Customization Options
The unit can be customized with:

• Passive transfer hatch with UV light sanitizing cycles.
• Square or three-door versions.
• Integration with Hydrogen Peroxide generators.

Available Dimensions
The hatch is available in several dimensions:

• 500 x 500 x 500 mm
• 800 x 500 x 700 mm
• 800 x 800 x 800 mm

Custom dimensions and special internal arrangements are available upon request.

Conclusion
Faster transfer hatches are designed to maintain a clean environment in Class ISO 5, facilitating the transfer of samples between areas with different air cleanliness levels. They can be simple passive boxes or dynamic structures with positive or negative pressure air flow patterns.