Eppendorf 022510541 Pink Polycarbonate PCR-Cooler Iceless Cold Pack, 96 Well PCR Plates, Strips and Tubes Pink iceless cold pack turns violet when ice cold Capacity: 96-well plates or PCR tubes; tube size: 0.2mL and 0.5mL Temperature safety is indicated by a color change when temperature is above 7 degrees C Special cone contour prohibits freezing of samples Superior to an ice bath, this iceless cold pack keeps samples safe from contamination and can be used for the protection, transportation, and storage of sensitive samples, as well as for the safely stopping reactions