IsoFreeze PCR racks are manufactured with a gel-filled center section that uses temperature-dependent color-change material, green to yellow or purple to pink.

• Maintains a sub 4°C (refrigerator) environment for up to 4 hours
• Ideal for PCR reagents, cells, enzymes, or other temperature-sensitive reagents
• Fits standard format 0.2 mL tube, strip tubes, and any format of PCR plate (up to 96 wells) for PCR, QPCR, or other applications

There is a dramatic change to a contrasting color at 7°C, so you can use this indicator to determine when the temperature of the rack, or even a single well, is rising to above standard refrigeration temperature. Also available in a new SBS footprint design, the new design provides a more compact option for crowded benchtops or freezers as well as conforming to robotic dimension standards for use in automation protocols.