The Litmus indicators roll red are used to test the acidity of a solution. If the solution is acidic and is below pH 7 then the indicator will turn blue.
The Litmus indicators roll red are included in a package of 100.
The Litmus indicators roll red are used to test the acidity of a solution. If the solution is acidic and is below pH 7 then the indicator will turn blue.
The Litmus indicators roll red are included in a package of 100.