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Product description Test your body's pH level using urine and Saliva. Using saliva or urine, you can check your pH to determine if your body is too acidic or too alkaline. Acid body can lead to: decreased poor immune system sleep cycles irritation damage and pain in the stomach is very important for your health! Water quality test. As is well known, it is very important to control the pH of the water, as it can be an indicator of other water problems. Wide application: pH paper test strips ideal for alkaline body acid pH level tests through urine or saliva, Ideal for science studies, laboratory use, drinking water, swimming pools, spas, aquarium, hydroponics and more. Full PH range: pH measuring ranges from 0-14, pH color chart range: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 13 14. Usage: Takeout a test paper, the 2-color block all immersed in the liquid. after 1 second to take out in contrast to the color of the color reading value in 30 seconds. Dia: 5.2CM.