This easy software serves as a visible indicator of acidity or alkalinity. It sometimes consists of paper that has been handled with a pure dye extracted from lichens. The dye modifications colour relying on the pH of the substance it comes into contact with. For example, if a strip turns crimson upon immersion in an answer, it indicators the presence of an acidic atmosphere; a blue coloration signifies alkaline circumstances.
Its enduring reputation stems from its ease of use, affordability, and its capability to offer a fast, qualitative evaluation of an answer’s pH. All through historical past, it has discovered software throughout numerous disciplines, from fundamental science schooling to subject analysis and rudimentary laboratory evaluation. It supplies a vital preliminary evaluation that may inform additional, extra exact, quantitative pH measurements.