As you are working on your biological samples, you will possibly need a centrifuge with -20°C. Have you ever doubted why the temperature would need to be so low? At negative temperatures, ice crystals will be building up and will denature the cells/organelles. Besides, you normally set the running temperature at 4°C instead of -20°C. Although the specification of the centrifuge is -20°C, this only means the chamber temperature. Your setting of 4°C is meaning the actual temperature on the sample position. This is your sample temperature during centrifugation.
Dynamica provides you with an accurate temperature of the sample position. Find out more about our centrifuge: Velocity 18R Pro