Cyanuric Acid: 0-240. Material: Litmus Paper. Total Alkalinity: 0-240. Total Chlorine: 0-10. Free Chlorine: 0-10. In the process of testing, first tear off a small piece of test page, dip a small amount of substance to be tested with a glass rod, cotton swab or other objects, drop it on the test page, see the color change, and then compare the corresponding color classification on the color comparison panel to know the PH value.
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