The EDL CRYO-CAL-2 was designed for the comparison of any sensor, including RTDs, thermocouples and long-stem Standard Platinum Resistance Thermometers (SPRTs). These units offer the utmost in uniformity, stability and the broadest operating temperature range available. The standard dewar design offers a safe, uniform and stable environment for testing three long stem sensors and a reference probe. Dewars may be customized at your request.