Thermax® 6-Level Mini Strip Irreversible Temperature Labels provide a fast, reliable and permanent indication that specific temperature thresholds have been exceeded. Each window turns permanently black when its rated temperature is reached, creating a tamper-evident record of maximum temperature exposure. Mini strips are ideal where space is limited, while still requiring clear evidence of overheating during manufacturing, storage or transport. Once activated, the colour change is irreversible—ensuring the event cannot be reset or concealed. Product type Irreversible temperature indicator label (Mini strip) Windows 6 irreversible temperature windows per label Label size 0.47" × 1.26" (12 × 32 mm) Orientation Horizontal Scale °C and °F Adhesive Self-adhesive backing Pack size Pack of 10 labels (per range) Available temperature ranges Range 1: 29, 34, 37, 40, 42, 44°C (84, 93, 99, 104, 108, 111°F) Range 2: 44, 46, 49, 54, 60, 62°C (111, 115, 120, 129, 140, 144°F) Range 3: 65, 71, 77, 82, 88, 93°C (149, 160, 171, 180, 190, 199°F) Range 4: 99, 104, 110, 116, 121, 127°C (210, 219, 230, 241, 250, 261°F) Range 5: 132, 138, 143, 149, 154, 160°C (270, 280, 289, 300, 309, 320°F) Range 6: 166, 171, 177, 182, 188, 193°C (331, 340, 351, 360, 370, 379°F) Range 7: 199, 204, 210, 216, 224, 232°C (390, 399, 410, 421, 435, 450°F) Range 8: 241, 249, 254, 260, 280, 290°C (466, 480, 489, 500, 536, 554°F) Key features Permanent, irreversible colour change Clear visual confirmation of temperature exposure No power source or calibration required Oil and water resistant construction Typical applications Process validation and quality control Transport and storage monitoring Warranty validation and compliance evidence Equipment, enclosures and temperature-sensitive packaging Availability & supply notice Temperature ranges are supplied subject to availability and manufacturing lead times. Certain ranges may be temporarily unavailable due to production scheduling or supply-chain constraints. If a selected range is unavailable, we will contact you promptly with revised lead times and/or suitable alternatives before dispatch. If you require confirmation of availability for a specific range or quantity, please contact us prior to ordering.
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