Clear Visual Indication
The green-to-white appearance change makes it easy to recognize possible freeze exposure.
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Zebra Environmental Sensors
Zebra FREEZEmarker® Freeze Indicators
Identify potentially damaging freeze exposure with easy-to-read, single-use temperature indicators. FREEZEmarker provides an irreversible visual signal when a qualifying freeze event occurs, helping support temperature-sensitive product monitoring during storage, handling, and transportation.
Detect Freeze Exposure at a Glance
Zebra FREEZEmarker indicators, manufactured by Temptime, are designed to identify when temperature-sensitive products have been exposed to freezing conditions. A clear visual response helps personnel recognize a possible temperature excursion without requiring electronic equipment or data interpretation.
Simple, Irreversible Freeze Detection
Before exposure to a qualifying freeze event, the indicator displays a green circle with a white checkmark.
Following freeze exposure, the indicator turns partially or completely white, obscuring the checkmark. This irreversible change provides a visible record that the indicator has experienced freezing conditions.
The compact format is suitable for use with products and packaging that require freeze-event monitoring.
How FREEZEmarker Indicators Work
FREEZEmarker provides a simple visual before-and-after indication to help identify exposure to freezing temperatures.
Before Freeze Exposure
The indicator shows a green circle with a clearly visible white checkmark.
After Freeze Exposure
The indicator becomes partially or completely white, obscuring the checkmark to show that a qualifying freeze event has occurred.
Why Choose FREEZEmarker?
Irreversible Response
Once a qualifying freeze event is indicated, the visual response remains changed even after the product warms.
Easy to Incorporate
Single-use indicators can support temperature monitoring processes for freeze-sensitive products and packaging.
TransTracker® with FREEZEmarker Indicator
For shipment-level monitoring, TransTracker with FREEZEmarker combines freeze-event detection with a format designed for temperature-sensitive shipments.
Monitor Freeze Exposure During Shipping
TransTracker C indicators incorporate FREEZEmarker technology to provide a visible freeze-event warning during product transportation.
Available response temperatures allow selection based on the monitoring requirements of different temperature-sensitive shipments.
The indicator is intended to help identify shipments that may need further evaluation following freeze exposure.
TransTracker C Specifications
Compare available freeze response temperatures, accuracy, response time, and card dimensions. On smaller screens, swipe horizontally to see the complete table.
| Indicator | Response Temperature | Response Time | Accuracy | Dimensions |
|---|---|---|---|---|
| TransTracker C | 0°C | 30 minutes | ±1°C | 54 × 84 mm |
| TransTracker C | −1°C | 30 minutes | ±1°C | 54 × 84 mm |
| TransTracker C | −6°C | 30 minutes | ±2°C | 54 × 84 mm |
Explore Other Temperature Monitoring Solutions
Looking for heat exposure monitoring, reversible temperature indication, or broader shipment-level monitoring? Explore these related Zebra solutions.
LIMITmarker® Threshold Heat Indicators
Monitor heat excursions with irreversible visual indicators available in delayed, quick, and immediate-response options.
Learn More
LIMITmarker® Reversible 18°C Indicators
Provide a clear visual cue when refrigerated products approach room temperature.
Learn More
TransTracker® Shipment Indicators
Monitor heat, freeze, or combined temperature exposure during cold chain shipping and storage.
Learn MoreNeed Freeze-Exposure Monitoring?
Contact BarcodeFactory to discuss FREEZEmarker indicators, TransTracker C shipment cards, and available options for your application.