Litmus indicators paper roll blue 5m are suitable for measuring the acidity of a solution. They allow checking whether a solution is acidic or basic.
The indicator is available in red and in the form of a 5m roll.
The red indicator paper is used to test the acidity of a solution since it turns red in an acidic environment, with the color change occurring over a pH range of 4.5 - 8.3 at 25 °C (77 °F).
The indicator is available in 2 types:
- Blue paper tape roll 5m
- Red paper tape roll 5m
Each package contains 5m rolls of tape.