Stability Refrigerators Darwin Chambers provides ST Series Stability Refrigerators The Stability Refrigerators supplied by Darwin Chambers follow the FDA/ICH Stability standards. Our Technicians can also service and repair Stability Refrigerators to ensure that they are operating at full capacity. Our ST series stability refrigerators provide the highest level of performance and construction with tight uniformity and control of temperature. They are a common product among laboratory researchers looking for exceptional precision and virtually unlimited customization options available. View Features