Thermo Forma Reach-In 821L 220 Forma Reach-In Incubated/Refrigerated Environmental Chamber, profile/recipe up to 24 steps.

Forma Reach-In Incubated/Refrigerated Environmental Chamber

• Leveling feet for stability and added safety in the lab
• Reinforced shelving and flooring for heavy loads
• Heatless dryer for lower humidity levels
• Stainless-steel interior with solid stainless-steel adjustable shelves
• Locking swivel casters for easy mobility during installation and cleaning

This series of environmental chambers meets International Conference on Harmonization (ICH) guidelines* for drug substance and product storage testing. The units are ideal for drug stability studies, shelf life testing for packaged products, and insect and other large-scale biological research.

Perform a variety of applications withThermo Scientific™ Forma™ environmental chambers, which can be configured for a variety of purposes and are available in multiple capacities. With a wide range of accessories and years of experience in constructing cabinets, we can construct units to match your most stringent applications.

Thermo Scientific directed airflow design

The Thermo Scientific directed airflow design (left) versus a top-to-bottom, undirected airflow design (right). The directed airflow minimizes the risk of product desiccation and loss, and wasted time and money due to poor temperature uniformity and recovery.

Advantages of our directed horizontal laminar airflow system

Our directed airflow system (shown below) promotes an ideal growth environment. The enhanced design includes a positive pressure feed plenum on the right side of the chamber and a negative pressure return plenum on the left to distribute the airflow uniformly throughout the chamber. This combination directs air across the surface of each solid shelf. Even when filled with samples or equipment, each shelf receives a consistent flow of conditioned air for optimum temperature uniformity and recovery. As opposed to our horizontal airflow system, top-tobottom (non-directed) airflow systems use a topmounted fan to push air down through wire shelves. Temperature uniformity and recovery can deteriorate quickly when shelves are filled because air movement is blocked. That variation in temperature, alone or when combined with frequent door openings, may compromise environmental conditions or make process validation difficult. Standard 4 to 20 milliamp output connects to most alarm/monitoring systems, allowing you to meet internal and regulatory product documentation requirements. Chart recorders are also available.

Temperature/Humidity Performance
Chart for 3940 (3949) and 3911 (3913)

The following chart illustrates the maximum and minimum attainable humidity within the cabinet at a given set temperature under the following nominal conditions: refrigeration on, defrost off, no wet bulb recorder, no air exchange, set for 22.2°C (72°F) and 50% RH ambient. Optional heatless dryer is available for lower humidity levels.