Universal Indicator Paper, pH 1-14 4x25
Universal Indicator Paper, PH 1-14 4x25, 4 x 25 per pack
Johnson Test Papers Universal Indicator Paper pH 1 - 14, Available in, 4 x 25 per pack It is used to test solutions for a pH reading to indicate the acidity / alkali.
Remove one of the Litmus Blue papers from one of the books in the pack. Dip the paper into the solution you are testing for around 1-2 seconds and remove. Then compare the colour against the colour chart, on the inside on the pack.
4 x 25 per pack