Timestrip Plus is an indicator which shows the amount of time a product has spent above its threshold temperature. Supplied in an adhesive label format, it is ideal for applying directly to products or packaging. Easy to read and highly accurate, the indicators are activated by simply squeezing a bubble on top of the product. A viewing window shows the indicator is active by changing color from white to blue. Once the temperature threshold is breached, the color moves across a scale, showing how long it has been above that temperature once the product is returned to appropriate temperature, the color stops progressing. Separate models are available for chilled and frozen products.