Testo 0646 1071 testoterm +71 °C Temperature Indicator Labels, 50-Pack

Irreversible temperature indicator labels that permanently change colour from white to black when the surface reaches +71 °C. Each pack contains 50 self-adhesive labels, providing a simple and reliable way to monitor temperature exposure during transport, storage, or processing.

Advantages

The irreversible colour change ensures a permanent record that the temperature threshold has been exceeded, even if the product later cools down. The self-adhesive backing allows quick attachment to a wide range of surfaces, and the compact size makes them suitable for use in confined spaces.

Suitable for

• Monitoring temperature-sensitive goods during shipping and storage
• Quality control in manufacturing processes
• Verifying that equipment or components have not been exposed to excessive heat

Key specifications

• Indication temperature: +71 °C
• Temperature indication principle: irreversible colour change
• Accuracy: ±1.5 °C
• Quantity per pack: 50 labels
• Number of indication points: 1
• Colour change: white to black
• Label dimensions: 15 x 45 mm
• Adhesive type: self-adhesive
• Response time: typically less than 2 seconds
• Application temperature range: -30 to +120 °C
• Storage conditions: 6 to 25 °C, 20-80% RH
• Shelf life: 2 years from manufacturing under specified storage conditions
• Material: heat-sensitive foil
• Resistance: resistant to oil, water, and some chemicals

Recommendations

Store unused labels in a cool, dry place away from direct sunlight to maintain accuracy. Apply to a clean, dry surface for best adhesion. Do not use on surfaces exceeding 120 °C.