WarmMark^®

WarmMark works very simply, if the window in the indicator stays white, there is no problem. However if the temperature climbs beyond a certain threshold, a red color gradually moves through the windows of the WarmMark indicator with the passage of time. If the temperature drops down below the threshold, the color stops moving. This way you can estimate how long your product was exposed above the threshold temperature.

Activation of the device is simple — remove the tab and barrier film and apply to a dry surface on your product or packaging.