Darwin Chambers

Stability Freezers

Stability Freezers – FS Series

The Darwin Chambers Stability Freezers are designed for performance specifications exceeding FDA and ICH requirements.Thousands of our stability freezers are presently in use by many pharmaceutical, cosmetic, nutraceutical, medical device, therapeutic pharmaceuticals, pharmaceutical stress testing, and other research companies around the world. The Darwin Chambers Stability Freezer FS Series is a top selling stability freezer chamber very common in laboratories.


The FS011 is a bench top stability freezer chamber. Units can be stacked with optional racking set-up.

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The FS030 is a single-door stability freezer chamber.

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The FS055 is a 2-door stability freezer chamber.

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The FS084 is a 3-door stability freezer chamber.

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FS Series

The FS Series is a top selling stability freezer chamber very common in laboratories.

Temperature Range

The FS series offers a temperature range of -25º C to +15º C.

Widely Proven, Non-Proprietary Controllers

Standard controllers for the FS Series are manufactured by Fuji Electric and are ideal for laboratory freezer. Unlike many proprietary controllers, this controller is commercially available and proven in tens of thousands of installations. Standard functions include: autotuning, fuzzy logic, PID control, programmable alarms, calibration capability, ramp/soak, offset capability, etc. A touchscreen control interface is optional. Other controller manufacturers are also supported (Watlow, Allen-Bradley etc.)

Services and Warranties

We offer technical support throughout the lifetime of your freezer. In addition to standard warranties, we also offer extended warranties for cooling components, parts and labor. We also provide qualifications, validations and preventive maintenance services at an additional cost. Please ask for a quote.

Refrigeration System

The FS Series provides an oversized and balanced, environmentally friendly R404A refrigeration system with an epoxy-coated evaporator coil. This large evaporator and coil heater allow for a short defrost cycle, along with an automatic evaporator fan motor to delay frost formation during defrost.

Options Available

  • Chart Recorder
  • Data Logger