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| IsoFreezeŽ PCR rack. To maintain a sample temperature of less than 4ēC for almost 4 hours. Color change plastic enables you to see at a glance how cold your samples are. |    |
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| IsoFreezeŽ PCR rack. To maintain a sample temperature of less than 4ēC for almost 4 hours. Color change plastic enables you to see at a glance how cold your samples are. | |
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