Gain visibility into heat exposure with simple,
single-use temperature indicators. LIMITmarker
irreversible indicators provide a visible color
change when specified heat thresholds are reached.
Choose from delayed, quick, and immediate-response
options for temperature-sensitive products.
Monitor Heat Exposure with Confidence
LIMITmarker indicators can be applied directly to
heat-sensitive products or their packaging. When
exposed to temperatures at or above a specified
response temperature, the indicator changes color
within its designated response time. This helps
identify potentially damaging heat excursions that
might otherwise go unnoticed during shipping,
handling, or storage.
Visual Heat Warnings
Easy-to-read, irreversible color changes help
identify exposure above a defined threshold.
Multiple Response Times
Select delayed, quick, or immediate-response
indicators based on your application.
Product-Level Visibility
Compact indicators can be placed on products
or packaging to support temperature monitoring.
LIMITmarker Models and Specifications
Compare available response temperatures, response
times, accuracy, and indicator dimensions.
On smaller screens, swipe horizontally to view
the complete table.
Model
Indicator
Response Temperature
Response Time
Accuracy
Size
LIMITmarker F — Delayed Indication
F-A
9°C
2 hours
±1°C
35 × 22 mm
F-B
17.5°C
2 hours
±1°C
35 × 22 mm
F-M
25°C
2 hours
±1°C
35 × 22 mm
F-Y
31°C
2 hours
±1°C
35 × 22 mm
LIMITmarker I — Quick and Immediate Indication
I-K
40°C
15 minutes or less
±1°C
10 mm, with 3 mm active circle
I-P
44°C
15 seconds
±1°C
8 mm, with 3 mm active circle
I-C
50°C
15 seconds
±1°C
8 mm, with 3 mm active circle
Explore LIMITmarker Heat Indicator Options
Each indicator type is designed for a different
heat exposure scenario. Review the options below
to understand their response characteristics.
LIMITmarker® F Time-Delay Heat Threshold Indicators
LIMITmarker F indicators provide an irreversible
visual warning when a product has experienced
heat exposure above a predetermined threshold
for a specified period. Based on the melting
characteristics of heat-fusible materials, these
indicators change from white to red or pink
following a qualifying heat excursion.
Identifies potentially damaging heat
exposure over a specified time period.
Provides an easy-to-read, irreversible
visual color change.
Helps identify products that may require
further evaluation following a heat excursion.
LIMITmarker® I-C and I-P Immediate-Response
High Heat Indicators
LIMITmarker I-C and I-P indicators provide
single-use, irreversible heat exposure warnings.
Their heat-fusible technology produces a visible
change from gray to black when the specified
temperature threshold is reached. These
indicators are designed for applications that
require a rapid visual indication of high
temperature exposure.
LIMITmarker® I-K Quick-Response
High Heat Indicator
LIMITmarker I-K is a single-use indicator
that provides an irreversible visual
warning following exposure to temperatures
at or above its specified threshold.
It uses heat-fusible technology to produce
a visible change from gray to black,
helping identify potentially damaging
high-heat events during shipping,
storage, or handling.
Monitors exposure to high
temperatures.
Offers a quick, irreversible
visual color change.
Helps identify products that
may have experienced a
potentially damaging heat excursion.
Need help selecting a response temperature,
indication time, or product format?
The BarcodeFactory team can help you
explore options for your application.
Full Specifications — LIMITmarker F
