The Freeze / Thaw TH series chambers are our state of the art freezer environmental chambers used for a variety of applications. Freeze-thaw chambers are excellent for customers requiring ramp/soak programming. Controls are able to be quickly exchanged for future upgrades or repair. Darwin Freeze Thaw (TH) chambers allow you to determine if your product will remain stable under various conditions. During the freeze thaw cycle your product is put through a series of extreme temperature changes that it may encounter during its life cycle. Versatility with the chamber includes varying the freeze and thaw temperatures, duration in the freeze and thaw parts of a cycle, and overall number of cycles per day. These Freeze Thaw chambers are ideal for ASTM materials testing, as well as testing for drugs, food & beverage, and personal care products. They exceed ICH/FDA guidelines concerning uniformity requirements with a temperature range of -25°C to 50°C. Approximate ramping ability is as follows 1°C per 2 minutes from -23°C to +23°C and back, unloaded. Note: Some defrost tolerance may be required for extended operation (more than 48 hours) below 4°C. The TH series allows for testing in accordance with the AASHTO T103 Test Method, Procedures A, B and C. Additionally, Darwin’s Freeze Thaw chambers allow for testing in accordance with the Iowa Department of Transportation Test Method 211-B.