paper size: 45mm x 7mm (L x W) Package Content: 2 x pack (160 pH) < / p > < p > pH 1 - 14 color cards in each pack with color comparison cards showing that different pH values correspond to a specific color < / p > < p > the band test is sensitive and fast. Under normal conditions, the test paper solution changes color immediately after 1 - 2 seconds of contact with the test paper < / p > < p > different pH content discoloration ranges are different comparing the color map ratio: the smaller the value, the stronger the acidity, the larger the value, the stronger the alkalinity < / p > < p > There is a certain balance between changes in l internal body environment and pH. We can help understand our physical condition by testing the pH of some commonly used substances (including urine, sweat). It can also test moisturizing soap, lemon juice, milk, liquid detergents, wet floor, etc. < / p >
