IsoFreeze PCR and IsoFreeze PCR SBS are innovative, high performance personal chiller racks designed to maintain a cool, refrigerator like environment directly on the lab bench or workstation. Using proven IsoFreeze temperature maintenance technology, the filled racks help preserve the stability of PCR reagents, enzymes, cells, and other temperature sensitive samples during preparation and handling. These racks accommodate industry standard format tubes, strips, and 96 well plates in both standard and low profile well shapes, making them suitable for PCR, qPCR, and other molecular biology applications. Manufactured from rugged polypropylene containing a temperature dependent color change dye, each well provides a clear visual indicator of temperature status. A dramatic color shift occurs at approximately 7 °C, allowing quick monitoring during use. IsoFreeze gel technology enables the wells to remain cool for up to four hours depending on ambient conditions. The