T-shirt uses cabbage to track pollution in the water

T-shirt uses cabbage to track pollution in the water

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The Cabbage Project has been developed by UK fashion brand The Unseen. It uses the extraordinary powers red cabbage has to create a T-shirt that changes colour depending on the pH levels of the water it is washed in. Take it around the world and your purple t-shirt may change into a green or a red one, dependent on the acidity of the local water. Take it to the Dead Sea and it turns into a yellow T-shirt. The change of colour is made possible by the anthocyanins, water-soluble vacuolar pigments which are contained in red cabbage juice and act as pH indicator.

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