Gout patients can measure the pH of their urine themselves and use it as a guide for controlling uric acid. Quantity: 1 box (20 blue sheets, 20 red sheets)
Color change: Acidic (< pH 4.5-5): Blue → Red, Alkaline (> pH 8-8.5): Red → Blue, Neutral: No change in either blue or red
Material: high-quality paper
