Litmus test

Litmus test may refer to:


 * Litmus test (chemistry), used to determine the acidity of a chemical solution
 * Litmus test (politics), a question that seeks to find the character of a potential candidate by measuring a single indicator
 * The Litmus Test, a Radio 4 programme presented by Fred Harris
 * The Litmus Test, a 2004 album by Cut Chemist