Cold Chain Complete temperature indicator monitors temperatures during shipping and storage, indicating if goods experience unacceptable conditions. These reliable temperature indicators provide visual evidence of exposure to temperatures outside of the 2-8C refrigeration range allowing you to determine if product quality has been compromised. Temperature threshold: below 2C/36F for 90 minutes and above 8C/46F for 48 hours. Accuracy +/-1C. Shelf life 1 year. Single-use. Small footprint.