pH > 7 Litmus Paper Alkali Test. Red. 5m x 7mm reel

Red to Blue

Reel 5m x 7mm

These papers do not require the need for a colour chart as their purpose is to demonstrate qualitative analysis in a simple ‘yes’ and ‘no’ manner. They will not provide accurate pH measurement but will change from one colour to another at a set pH value, depending on the paper. These user-friendly test papers are suitable for many industrial and educational applications.