How do you make litmus paper?
To make litmus paper at home, you need a few ingredients. These are: red cabbage, boiling water, two glass jars, filter paper, blotting paper, and some liquid samples. First, take the red cabbage and chop or cut it up into small pieces. Add the shreds to a glass jar with boiling water. Wait 30 minutes for it to cool. After the 30 minutes is up, filter out the leaves and collect the juice in another jar. Soak some blotting paper in the juice and set aside to dry. Once dried, the strips are ready to use. Dip the paper into a base, and it will turn green. Dip it into an acid, and it will turn pink or red.