Indicators
pH 7Purple
pH 7, Purple, Neutral
Litmus
A dye of natural origin, extracted from lichens. One of the first and best known acid-base indicators.
Transition range pH 4.5 – 8.3
A dye of natural origin, extracted from lichens. One of the first and best known acid-base indicators.
Transition range pH 4.5 – 8.3