Zebra LIMITmarker Threshold Heat Indicators - Lowest Price Online

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Zebra LIMITmarker® Threshold Heat Indicators

Enable customers to gain visibility into the temperature exposure of products—medications, vaccines and others—with a simple card or self-adhesive indicator. LIMITmarker irreversible visual temperature indicators can be applied directly to heat-sensitive products; available with delayed (2 hours), quick (15 minutes) or immediate (seconds) indication. When exposed to temperatures at or above the response temperature, the heat indicators change color within a specified response time to give a visual warning.


LIMITmarker Response Temp Response Time Accuracy Size
F – Delayed Indication
F-A 9oC 2 hours  +/- 1oC 35 x 22 mm
F-B 17.5oC 2 hours  +/- 1oC 35 x 22 mm
F-M 25oC 2 hours  +/- 1oC 35 x 22 mm
F-Y 31oC 2 hours  +/- 1oC 35 x 22 mm
I – Immediate Indication
I-K 40oC 15 minutes or less  +/- 1oC 10 mm
with 3 mm active circle
I-P 44oC 15 seconds  +/- 1oC 8 mm
with 3 mm active circle
I-C 50oC 15 seconds  +/- 1oC 8 mm
with 3 mm active circle

LIMITmarker® Heat Indicators

Zebra LIMITmarker® F Time Delay Heat Threshold Indicator

A single-use indicator that provides an easy-to-read, irreversible visual color change when there has been exposure to a temperature above the threshold limit for a short period of time. The technology is based on the precise melting of heat-fusible materials at specified temperatures. The easy-to-read color change from white to red/pink is a visual signal when there has been a heat excursion above the predetermined temperature profile. Many medical products can be damaged and lose strength when exposed to temperatures above a certain threshold. Such excursions can go unnoticed during shipping and storage. Leading medical product manufacturers and distributors use LIMITmarker F.

  • Identifies when a potentially damaging heat excursion has been experienced for a short period of time.
  • Easy-to-read, irreversible visual color change.
  • Used to identify and prevent the administration or use of products that can be damaged or lose strength after a high heat excursion.

Zebra LIMITmarker® I-C and I-P Immediate Response High Heat Threshold Indicator

Single-use indicators that provides an easy-to-read, irreversible visual color change when there has been exposure to a temperature above the threshold limit. The technology is based on the precise melting of heat-fusible materials at specified temperatures. The easy-to-read color change from grey to black is a visual signal when there has been a heat excursion above the predetermined temperature profile. Many medical products can be damaged and lose strength when exposed to temperatures above a certain threshold. Such excursions can go unnoticed during shipping and storage. Leading medical product manufacturers and distributors use LIMITmarker I-C and I-P.

  • Identifies when a potentially damaging high heat excursion temperature has been experienced.
  • Easy-to-read, irreversible visual color change.
  • Used to identify and prevent the administration or use of products that can be damaged or lose strength after a high heat excursion.

Zebra LIMITmarker® I-K Quick Response High Heat Threshold Indicator

A single-use indicator that provides an easy-to-read, irreversible visual color change when there has been exposure to a temperature above the threshold limit. The technology is based on the precise melting of heat-fusible materials at specified temperatures. The easy-to-read color change from grey to black is a visual signal when there has been a heat excursion above the predetermined temperature profile. Many medical products can be damaged and lose strength when exposed to temperatures above a certain threshold. Such excursions can go unnoticed during shipping and storage. Leading medical product manufacturers and distributors use LIMITmarker I-K.

  • Identifies when a potentially damaging high heat excursion temperature has been experienced.
  • Easy-to-read, irreversible visual color change.
  • Used to identify and prevent the administration or use of products that can be damaged or lose strength after a high heat excursion

Monitor Temperature-Sensitive Products

LIMITmarker® Reversible 18°C Indicators

LIMITmarker Reversible 18°C indicators provide a visual cue when products that require refrigeration to maintain their efficacy reach room temperature. The indicator is solid blue when cold (at or below 8°C), then changes color and reveals "OK" when it approaches room temperature (18°C, plus or minus 2°).

The indicators are 16 mm x 10 mm self-adhesive labels, easily applied to the primary packaging of products, where they can be viewed and intuitively understood by users.

FREEZEmarker® Freeze Indicators

FREEZEmarker irreversible visual temperature indicators monitor exposure to freeze events. When exposed to a freeze event at or below the response temperature, the freeze indicators turn partially or completely white, obscuring the white checkmark, to warn that the temperature limit has been exceeded and the endpoint reached.

Many medical products can be damaged and lose strength if they are frozen. Such excursions can go unnoticed during shipping and storage.

TransTracker® Shipment Indicators

Monitor temperature-sensitive products across cold chain logistics from manufacturer to distributor, and hospital, clinic or pharmacy to the patient or end user. Provides accurate temperature monitoring with visual signals inside multiple unit packages or shipping boxes.

Helps you comply with increasing regulations, limit the waste of products incorrectly suspected of heat or freeze damage, lower the cost of reshipping medications or perishable food, and ensure user confidence and satisfaction.

Why use Zebra's Ready to Use Indicators?

Zebra's ready to use indicators give customers critical information about their heat and freeze sensitive products. They provide peace of mind and confidence that their products have not had a temperature excursion using an objective, easy to understand and clearly visible monitoring device.

Zebra LIMITmarker Threshold Heat Indicators