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Testoterm temperature strips are innovative, self-adhesive foils designed for precise, irreversible maximum temperature monitoring across various applications. Each strip features highly sensitive heat-sensitive elements that permanently change color from light gray to black within 2 to 3 seconds when a specific temperature threshold is reached. This distinct, non-reversible color change provides clear, undeniable evidence that a critical temperature was attained.
These compact and versatile strips eliminate the need for cumbersome electronic probes in tight or dynamic environments. Simply peel and apply the strip directly to the measurement surface to gain lasting visual proof of thermal conditions. They are ideal for situations where continuous electronic monitoring is impractical or cost-prohibitive, offering a simple yet effective solution for ensuring thermal compliance and preventing potential damage.

In many industrial, HVAC, and logistical scenarios, knowing if a maximum temperature has been exceeded is crucial for equipment longevity, product quality, and safety compliance. Testoterm strips provide an undeniable, tamper-evident record without the need for power sources or complex data logging. This permanent visual indicator allows for quick inspections and confident decision-making, helping you identify overheating issues, verify transit conditions, and maintain operational integrity.
To simplify your selection, we have consolidated the entire range of Testoterm strips here. Select the part number that corresponds to your required measuring range below:
| Part Number | Measuring Range (°C) | Measuring Range (°F) | Accuracy |
|---|---|---|---|
| 0646 0108 | +37 to +65 °C | +99 to +149 °F | ±1.5 °C |
| 0646 0916 | +71 to +110 °C | +160 to +230 °F | ±1.5 °C |
| 0646 1724 | +116 to +154 °C | +241 to +309 °F | ±1.5 °C |
| 0646 2532 | +161 to +204 °C | +322 to +399 °F | ± (1 % of mv + 1 °C) |
| 0646 3341 | +204 to +260 °C | +399 to +500 °F | ± (1 % of mv + 1 °C) |
| Delivery Scope | 1 booklet containing 10 Testoterm temperature strips |
| Dimensions | 50 x 18 mm (approx. 2 x 1 inch) |
| Response Time | 2 to 3 seconds |
| Storage Temperature | Maximum +25 °C (77 °F) |
Tradie Pro Tip: For accurate readings, ensure the surface where you apply the Testoterm strip is completely clean, dry, and free of oil or heavy dust. A solid, direct bond is essential for optimal heat transfer. Also, remember to store your unused booklets in a cool place, ideally below 25°C (77°F), to prevent premature activation in warmer environments like a toolbox. Treat them like sensitive instruments!
Ensure your systems are running optimally and sensitive goods are protected from thermal extremes. Trust Testoterm temperature strips for reliable, permanent temperature verification. For a full breakdown of indicator types, temperature ranges, and how to choose the right strip for your application, read our Testoterm temperature indicators guide. Explore the full range at HVAC Shop today!
Ships within 48 hours · Estimated delivery Jun 23 - Jun 28
US$40
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