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Colour change: Purple to green
Sold in packets of 50 test strips
reliable results matter
giving a permanent colour change
WarmMark Increasing Temperature Indicator Labels -18ºC to 37ºC WaterWorks™ Peroxide (H2O2) Colour change: Purple to greenOverview WarmMark is a single use, ascending time temperature indicator which alerts users of exposure to unacceptable temperature conditions. Specification The WarmMark is available in the following temperature sensitivities: 18C 0F 0C 32F 2C 35F (48 hours run out specialized for COVID 19 vaccine) 5C 41F 8C 46F (6 hours, 14 day run out specialized for COVID 19 vaccine) 10C 50F 20C 68F 25C 77F (6 hours run out specialized for COVID 19 vaccine) 30C 86F
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