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Handling requirements

There aren’t many special handling requirements for thermochromic inks, but Whelan says converters should be educated before using them. “Shelf life is three months to one year in the container, depending on formulation,” she states. “Ink life in the printed form can be many years, but under normal use. These inks are sensitive to UV light and will have less life in the printed form if exposed to high temperatures and extensive light over long periods of time.” Otherwise, she says, the printed label or package should last for many years, under normal use.