Litmus solution is a natural dye used as an acid-base indicator. It is typically obtained from lichen species (especially Roccella tinctoria).

Packaged for school use, it is designed for experimental use in middle school science or high school physics, chemistry, or biology laboratories. Our school laboratory chemicals are of technical quality and are produced under the Rokim brand and guarantee.

Color Transitions

• Blue litmus → Turns red in acidic environments.
• Red litmus → Turns blue in basic environments.
• pH transition range: 4.5 – 8.3