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Calvex Reach-in Chambers



  • Net Capacity: 32 cu. ft. (906 cu. l)
  • 3” non-CFC polyurethane foam insulation
  • 3 Heavy-duty, epoxy-coated shelves
  • Shelf Area: 24.4 sq. ft. (2.3 sq. m)
  • Weight Std – 400 lbs. (181 kg)
  • BTU Heat Output @80F 1200 BTUH
  • Designed to maintain temperatures in 72°F +/-8°F ambient.


  • Net Capacity: 52 cu. ft. (1472 cu. l)
  • 3” non-CFC polyurethane foam insulation
  • 6 Heavy-duty, epoxy-coated shelves
  • Shelf Area: 40.8 sq. ft. (3.8 sq. m)
  • Weight Std – 450 lbs. (204 kg)
  • BTU Heat Output @80F 1500 BTUH
  • Designed to maintain temperatures in 72°F +/-8°F ambient.


  • Net Capacity: 75 cu. ft. (2124 cu. l)
  • 3” non-CFC polyurethane foam insulation
  • 9 Heavy-duty, epoxy-coated shelves
  • Shelf Area: 61.2 sq. ft. (5.7 sq. m)
  • Weight Std – 765 lbs. (347 kg)
  • BTU Heat Output @80F 1800 BTUH
  • Designed to maintain temperatures in 72°F +/-8°F ambient.

Calvex Performance Line (CPL) Cabinet Construction

CPL series chambers are available with the following finishes:

  • STANDARD – Exterior doors and chamber front are Stainless Steel, Exterior side end panels, top, bottom, and back are Aluminum, Interior is Aluminum
  • SA (Optional) – Full Exterior is Stainless Steel, Interior is Aluminum
  • SS (Optional) – Full Exterior and Interior are Stainless Steel


Thermoelectric Cooling

Built-In Redundancy (Cooling); “performance rated”, air-cooled, redundant, thermoelectric cooling system is installed on top of each chamber. Air circulation fans are contained within a concealed insulated housing, readily accessible on top of the cabinet and separate from the product storage area to increase storage capacity. The entire system is mounted on a base which can be easily removed if repair is required. Chamber is designed to maintain 20°C-60°C while operating with an unrestricted air supply at a maximum ambient temperature of 80°F.

Performance and Control

Calvex Performance Line (CPL) chambers are designed to meet the needs of the scientific community and will meet FDA and ICH requirements for temperature and humidity. Our chambers are designed to meet your project specifications including temperature and humidity required for stability chambers, controlled environmental test chambers, light study chambers, plant growth chambers, incubators, refrigerators, and freezers. You have a choice of PID controller(s) or Optional Calvex Signature Touchscreen with PLC control.

Cabinet Construction

All materials are of high quality, assembled to conform with strict quality-assurance requirements. The cabinet front is constructed of heavy-gauge polished stainless steel for durability. All cabinet joints and seams are sealed vapor-tight. The case is of all metal, welded construction and internally supported and braced for a rigid unit construction. Cabinet design eliminates overlapping panels with raw edges. Cabinet body is insulated with non-CFC, foamed-in-place polyurethane foam with an average thickness of 3 inches to ensure increased energy efficiency. Full-length louvered air grille located above the doors allows equal air circulation to the cooling assembly.  Automatic interior lighting is activated by an easily accessible interior switch. Cabinets are equipped with 6-inch adjustable stainless steel legs.

Door/Interior Construction

Solid-hinged door shells are constructed of heavy gauge stainless steel and are internally braced and urethane-foam-insulated for rigidity. Door corners are welded construction and polished. Replaceable snap-in door gaskets are self-adjusting, heavy-duty, magnetic-type. Easily removable, low-wattage, anti-sweat door heaters concealed by a non-metallic, non-conductive, high-impact thermal breaker strip eliminate condensate build-up on the cabinet front. Door handles and hinges are chrome-plated and non-corrosive. Doors are provided with built-in cylinder locks which are keyed alike. Hinges are cam action, lift-off type featuring positive safety stop at 120 degrees. Energy saving switch for door heaters. LED interior lighting. Cam action, lift off hinges. Chrome-plated flow line handles.


Shelves are designed for heavy-duty use with 0.306” diameter frame and brace members and 0.140” diameter fill wires spaced 3/4” apart. Shelves are welded steel and epoxy-coated for a durable, long, rust-free service life. Adjustments are in 1-inch increments. Additional shelves or replacement shelves are available.

Ultrasonic Humidification

An energy efficient ultrasonic humidification system is used to add moisture to the chamber to raise the humidity level in the chamber. The ultrasonic humidifier provides several benefits compared to the typical steam system such as, has inherent redundancy built into each ultrasonic pod (has 5 ultrasonic discs), also adds no heat to the chamber.

Chambers are our passion!

Chambers are our passion!

Watlow F4T Touchscreen Temperature and Humidity Process Controller

The Watlow F4T provides temperature and humidity system control and alarm functionality with touchscreen capabilities and is now standard on all Calvex CPL Reach-in and Walk-in chambers.

Watlow F4T Touchscreen Process Controller Features

  • 4.3-inch color touch panel with high-resolution, graphical user interface.
  • Temperature PID, data logger, over/under-temperature and humidity limit, power switching, math, logic, timers and counters combined into an integrated system.
  • Modular design.
  • Ethernet TCP/IP, Modbus RTU, EIA-232 Communications.

Optional Calvex Signature Touchscreen Features

Optionally, the Calvex Signature Touchscreen is available for all chamber configurations and provides a greater detail and higher level of chamber functionality for end users.

  • Visual indication of fan and system run status.
  • Refrigeration system redundancy with switch capabilities to maintain even system runtime.
  • Calibration and Uniformity Offsets.
  • Alarm Logging functions that recall previous alarms with time and dates.

Options and Accessories

CDS/DEA Options

  • One way security screws
  • Locking hasp (lock not included)
  • Coverless hinges
Do you have a special configuration or design specification? Consult our factory for other model configurations, options, and accessories.
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