Industry-Specific Cleanroom Equipment

Refrigerated Pass Box

A wall-mounted interlocked transfer chamber with stainless interior, active refrigeration and digital temperature monitoring for sensitive materials.

Monitored Chamber Cooling
Opposing Interlocked Doors
Stainless Transfer Interior
Flush Cleanroom Frames

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Product Introduction

The refrigerated pass box combines a thermally insulated stainless transfer chamber with opposing interlocked doors and a dedicated cooling module. It allows temperature-sensitive samples or supplies to cross a controlled wall without personnel movement while reducing simultaneous door opening. A digital controller displays chamber temperature, and sealed internal corners, removable shelving and accessible condensate management support routine cleaning.

Key Features

An insulated stainless chamber and refrigeration module maintain a controlled cool transfer environment.

Electromagnetic door interlocks discourage both doors from opening at the same time.

Flush wall frames, gasketed doors and radiused internal corners simplify cleaning around the opening.

A digital controller provides local temperature display and configurable alarm contacts.

Customer Product Concerns

Ordinary pass boxes do not protect materials that must remain cool while waiting for receiving staff on the opposite side.

Sensitive material warms while staged inside a conventional transfer hatch.Active refrigeration and insulated panels reduce temperature rise during controlled transfer.

Opening both doors can disturb room segregation.Opposing electromagnetic interlocks permit one controlled side to open at a time.

Condensation and shelf joints complicate chamber cleaning.A stainless radiused liner, removable shelves and managed condensate path provide accessible surfaces.

Operators cannot readily confirm internal temperature before retrieval.A front digital controller displays measured chamber temperature and supports alarm output.

Typical Applications

Cold-chain sample transfer between laboratoriesTemperature-sensitive material movement into cleanroomsPharmacy compounding and clinical support areasBiotechnology media and reagent transfer

Technical Parameters

Typical configurable construction values for a cleanroom refrigerated pass box are listed below; operating set point depends on load and room conditions.

Core Material	304 stainless interior with polyurethane insulation, gasketed doors and integrated refrigeration module
Panel Thickness	50-100 mm insulated chamber and door construction
Effective Width	500-900 mm clear transfer opening
Maximum Length	Up to 1500 mm overall chamber depth including service module
Steel Facing Thickness	1.0-1.5 mm stainless interior and cleanroom-side facing
Core Density	38-45 kg/m³ closed-cell polyurethane insulation
Thermal Conductivity	0.022-0.026 W/(m·K) for polyurethane insulation
Surface Finish	Satin stainless chamber with radiused corners, flush frames and cleanable gasket profiles
Joint Type	Sealed insulated shell with welded stainless liner, gasketed opposing doors and electromagnetic interlock
Customization	Available based on the intended application and operating environment.

Available Options

Nominal 2-8 °C or application-selected cool set pointSolid stainless or glazed door windowsSingle or multiple removable shelvesRemote temperature alarm and data output

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