This temperature monitor provides highly accurate temperature measurement for heat sensitive materials during storage, shipping, and manufacturing. Tempilabel° temperature monitors are self-adhesive, easy to read, and available in a variety of shapes and sizes. Their accuracy is guaranteed to be within ۬% of its rated temperature. They become a permanent record to provide important documentation information. Pharmaceutical and medical product manufacturers frequently employ the Series 21, 120°F Tempilabel to determine if products have been exposed to temperatures above 120°F.