Eppendorf® PCR Cooler is a iceless cold storage system for 96 well plates and PCR tubes. It maintains a sample temperature of 0 °C (with 2 hours pre-cooling at -20 °C) for over an hour and then changes color when the temperature has exceeded 7 °C. By changing its color from violet to pink or dark blue to light blue, the PCR-Cooler indicates when the temperature ceiling of 7 °C has been exceeded. Easy to handle, space saving and free from contamination make it the perfect preparation for your PCR reactions. The temperature of single tubes is indicated by the color of the individual bores. In addition, samples are prevented from freezing by the specially developed cone contour.