3M™ Ultra-thin Water Contact Indicator Tape 5559 changes color RAPIDLY from white to red upon contact w/water. It is designed to withstand heat & humidity aging w/o giving water indication. The top surface is press printable by laser & ink jet devices.
Features and Benefits
Highly absorbent, transports water to show indications
Very high bond strength to most surfaces including low surface energy plastics such as polypropylene and powder coatings