← Back To the News Media · Did You Know? · before 3 meat. Yellow highlighter ink contains a pyranine dye. Yellow highlighter ink contains a pyranine dye. Its color is sensitive to acidic media. Lemon juice contains citric acid, which easily fades pyranine.Did you know? 🎓 See original source ▲ 0 ▼ 0 ★ Share Signal
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