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Water contact indicator tape changes from white to red when water contacts the edges of this tape, and stays red even when it dries out. The tape will not change if exposed to high humidity environments, only from liquid water. Water contact indicator tape is a great way for checking electronic devices or mechanical instruments that are not designed to operate in wet conditions. It is also good for finding water leaking sources. | ||
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There is a red dye (in dry form) on the back of the water indicator tape. It is separated from the front of the tape by a white wicking material. When water leaks in from the side of the tape it activates the dye which wicks through to the top side. Because the dye colors the wicking material, it stays red even when the tape dries out. Courtesy: 3M | ||
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Water contact indicator tape is a great way for a manufacturer whose products may be exposed to water but warranty does not cover water damage to verify a customer’s claims. For example:
Other possible applications:
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Common specifications for commercially available Water contact indicator tapes are listed below:
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