ColdMark Freeze Indicator, 26F/-3C

Save time and money having to investigate possible temperature damage to your shipments with Labelmaster’s ColdMark™ Freeze Indicators. These are tamper proof and show when your products have been exposed to cold temperatures for more than 30 minutes during transport. Simply peel the release liner off their back, and the pressure-sensitive adhesive quickly adheres to any dry surface inside or outside the packaging container. Their colorless bulb turns an irreversible violet color once the temperature falls below the indicator's response temperature. These measure 3 1/4 x 3/4 x 3/8 in., are activated at 26°F and are sold in packs of 100. Please note: Read their extreme weather warning carefully before using. Indicators must be stored above the response temperature and not exposed to temperatures exceeding 110°F. Additional shipping costs may be incurred during winter months due to temperature-controlled packaging.