The Testoterm Mini Indicators offer an efficient solution for monitoring surface temperatures in critical applications. These self-adhesive, temperature-sensitive films are engineered to provide immediate and irreversible visual feedback when specific temperature thresholds are surpassed. With a measuring range of +116 to +138 °C, they are particularly suited for scenarios where maintaining temperature limits is essential, such as in food processing, pharmaceuticals, and logistics.​

Each indicator features five distinct temperature points: +116 °C, +121 °C, +127 °C, +132 °C, and +138 °C. Upon exceeding any of these thresholds, the corresponding section of the indicator undergoes a permanent colour change within 2 to 3 seconds, allowing for accurate post-event temperature assessments.​

The indicators are supplied in a booklet of 10, facilitating easy storage and application. Their 15 mm diameter ensures they can be applied to small or irregular surfaces without interfering with the object's function. For optimal performance, it is recommended to store the indicators at temperatures not exceeding +25 °C, with refrigeration advised to extend shelf life.