Monitoring disinfection processes for foods or related goods

Label and package
Color sample

Temperature range: 70 – 134°C
Content: 500pcs/pkg
RoHS compliant

RETOMARK™ is a time and temperature indicator which irreversibly changes color from beige to brown when heated at a specific temperature for a specific period.

Sample Usage

Color Transition Simulation

Product Features

  • Time Temperature Indicator
  • 3 types of products covering applications from boiling sterilization to HTST are available.
  • Irreversible, single-use
  • Color changing period: 5 min to 120 min


Color Change
Response period
ApplicationJAN Code
R1AC 110~1345~30HTST sterilization4582130422748
R2AC 100~1205~15High temp sterilization4582130422755
Boil 90~10030~120
R3Boil 70~1003~60Boil sterilization4582130422762


 Response period


R1AC 110~1345~30HTST sterilization
R2AC 100~1205~15High Temp sterilization
Boil 90~10030~120
R3Boil 70~1003~60Boil sterilization


500 pcs / package

Color change temperature and period


Apply where temperature monitoring is required.


    • The sample color tone above may differ from the actual color. Please verify the actual color change under the required conditions before use.
    • Apply on a flat surface. The RETOMARK™ indicator might fall off if applied on an uneven surface.
    • Do not bend the indicator or apply to a curved surface.
    • Do not cut the RETOMARK™ indicator. This may reduce the durability of the product or cause abnormal color changes.


Please store in refrigerator. Storing at room temperature for long periods can cause the RETOMARK™ indicator to change color.


Applying label

  • Remove water, oil, rust and dust from the surface before applying the label. Contamination and uneven surfaces can cause labels to fall off or lead to abnormal color changes.
  • Remove the release film, apply where temperature monitoring is required, and press the surface of the label gently with a finger or cloth. Strong rubbing might damage the label and affect performance (leading to abnormal color changes).
  • Apply the labels on a flat surface. Labels are not designed to be applied on curved or corner surfaces.
  • Do not change the shape of the product. Cutting the product with a knife or re-shaping it can reduce its durability and cause abnormal color changes.


  • Do not use electromagnetic induction heating, for example, microwave ovens, and do not use the product under high pressure conditions or high vacuum conditions.

Directive of RoHS

The RETOMARK™ indicator does not contain chemical substances prohibited by the RoHS directive.

Hazard identification

Immediate health, physical, and environmental hazards: The environmental properties of this product present a low environmental hazard. This product, when used under reasonable conditions and in accordance with the directions for use, should not present a health hazard. However, use or alteration of the product in a manner not in accordance with the product’s directions for use may affect the performance of the product and may present health and safety hazards.


The information on this page is believed to be correct as of the date of issue. Neither the selling or producing company provides any warranties, expressed or implied, including, but not limited to, any implied warranty of merchantability or fitness for any particular purpose, course of performance, or usage of trade. The user is responsible for determining whether this product is fit for a particular purpose and whether it is suitable for the user’s method of use or application. Given the variety of factors that can affect the use and application of this product, some of which are uniquely within the user’s knowledge and control, it is essential that the user evaluate this product to determine whether it is fit for a particular purpose and suitable for the user’s method of use or application.

*Temperature label, RETOMARK, UVLABEL and DEWLABEL in all content including the digital catalog on this website are registered trademarks of NiGK Corporation in Japan.

*THERMOLABEL, RETOMARK, MEDESHILL, UVLABEL, DEWLABEL and Thermo-Paint in all content, including the digital catalog of this website, are registered trademarks of NiGK Corporation in Japan.

THERMOLABEL is a registered trademark of NiGK Corporation, in Japan, New Zealand, and the Philippines.

THERMOLABEL is a registered trademark of NiGK Corporation, in Japan, Australia, the European Union, and Switzerland.