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Continue to ChatCabbage water indicator https://www.kitchenchemistry.uk/topics/reactions-that-involve-colour-changes/acid-base-indicators-from-cabbage-water-and-other-coloured-materials/
Cabbage water indicator https://www.kitchenchemistry.uk/topics/reactions-that-involve-colour-changes/acid-base-indicators-from-cabbage-water-and-other-coloured-materials/