pH strips are pieces of paper that change color depending on the pH – the acidity or alkalinity – of a liquid. A strip of filter paper is soaked with different pH indicators (more on that later), allowed to dry and voila: pH strips. Most common pH strips are designed to test urine, water and saliva.Click to see full answer. Thereof, how does pH paper help to determine the pH? Main Use for pH Paper PH paper is used to determine if a solution is acidic, basic or neutral. This is determined by dipping part of the paper into a solution of interest and watching the color change. For instance, if the paper turns a dark greenish-blue, the pH may likely be around 11 to 14.Additionally, how does litmus paper work? Fast Facts: Litmus Paper The litmus test is performed by placing a small drop of sample onto the colored paper. Usually, litmus paper is either red or blue. Red paper turns blue when the pH is alkaline, while blue paper turns red when the pH turns acidic. Likewise, people ask, what is the pH of paper? It is important that the pH of paper is 6.0 or higher. Therefore, a spot of chlorophenol red solution applied to material being tested should turn purple or slightly purple, indicating a pH of 6.4 or better.How do you make pH paper? Method 1 Making Homemade pH Paper with Cabbage Chop up some red cabbage. Add boiling water to your cabbage. Turn on the blender. Pour the mix through a strainer. Add isopropyl alcohol to your indicator solution. Pour the solution into a pan or bowl. Soak your paper in the indicator solution.