M-70 Cryoguard Thermal Exposure Indicator

• Signal temperature: -70°C
• Activated indicator turns red when exposed to temperatures at or above -70°C
• Used for monitoring products shipped or stored in liquid nitrogen that need to be kept at or below -70°C
• Recommended for monitoring environments at or below -95°C
• Cryoguard indicators have a shelf life of eight months. The shelf life applies whether the indicator is activated or unactivated. An expiration date appears on the label on each indicator.