1.It is a scale used to find the acidity and the basicty of a solution.
2.Here are the steps:You place the water on the surface of the bar of soap.Then,you rub the water onto the soap until it lathers.Later on,you dip the pH strip in the bubble and lastly you check the pH strip against the chart that is included.
PH is a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions are measured to have lower pH values than basic or alkaline solutions. They use pH strips to test soaps, the best is between 5.5 & 6.5 .
