LIMITmarker Heat Indicator

Easy-to-read LIMITmarker threshold heat indicator monitors heat exposure and provides visual indication when temperature limits have exceeded the response temperature

LIMITmarker Heat IndicatorLIMITmarker® heat indicator is a single-use heat indicator that can be applied directly to heat-sensitive products. LIMITmarker provides an easy-to-read, irreversible visual signal within the specified response time that heat exposure at or above the response temperature has occurred. It is adhesive-backed and can be applied directly to product surfaces or packaging. The indicating “window” on the label changes color when the Response Temperature is exceeded.

Learn how Encompass Rx uses LIMITmarker to increase patient satisfaction and reduce costs.

Watch this video on how SMP Pharmacy Solutions uses LIMITmarker:

LIMITmarker heat indicators for SMP specialty pharmacy shipments

LIMITMarker F – Delayed Indication

LIMITmarker F is a heat indicator that monitors temperature and indicates when the cumulative time of heat exposure, at or above the response temperature, exceeds the response time (2 hours).

LIMITmarker F before and after heat event

Prior to reaching endpoint, the small indication window in the blue rectangle remains white (Fig. 1). When LIMITmarker F indicators are exposed to temperatures at or above the response temperature, the window changes color to pink or red within the specified response time.

The appearance of any pink or red in the window means that the indicator has reached “endpoint.”

LIMITMarker I – Immediate Indication

LIMITmarker I is a high heat threshold indicator that monitors temperature and immediately indicates when the heat exposure, at or above the response temperature is exceeded.

LIMITmarker I before and after heat event

If the color of the center circle matches or is darker than the outer circle, the ENDPOINT has been reached indicating that the predetermined threshold heat profile has been exceeded.

When LIMITmarker I indicators are exposed to temperatures at or above the response temperature, the center circle will match or will be darker than the outer circle, the ENDPOINT has been reached within the specified response time.

Placed on product or product unit box. Pressure-sensitive adhesive, for flat surface applications.

 

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 seconds  +/- 1oC 8 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

Response Time is the time above the upper limit of temperature tolerance. The upper limit of tolerance is the Response Temperature plus the Accuracy.  For example, a LIMITmarker with 9°C response temperature and  ±1°C accuracy has an upper limit of tolerance of 10°C.