pH adjustment

pH readings make it possible to determine whether a solution is acidic or alkaline. Phosphates are used to adjust alkalinity in order to help dissolve dirt: The higher the pH level, the better the cleaning effect.
Pure water has a pH level of roughly 7 and is described as neutral. Acidic solutions have a low pH value. Alkaline products have a higher pH value. Acidic cleaning products are suited to removing limescale and rust stains, whereas alkaline products are good at removing fats and oily impurities.