Litmus is a water-soluble mixture of different dyes extracted from lichens. It is often absorbed into filter paper to produce one of the oldest forms of pH indicator, used to test materials for acidity. In an acidic medium, blue litmus paper turns red, while in a basic or alkaline medium, red litmus paper turns blue. In short, it is a dye and indicator which is used to place substances on a pH scale.
FAQ
- Where can I find Litmus live shows?
- Open Litmus in the SoundOff app for personalized upcoming show picks based on your own concert history.
- How do SoundOff fans rank Litmus?
- SoundOff uses head-to-head comparisons instead of star ratings. Fans who logged Litmus compare sets to build a personal ranking over time.
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