Range of measurement:3.8-5.4

Method of storage:Dry storage Recommended

The correct use of pH test paper is to dip the glass rod to be measured in the middle of the test paper, the test paper changes color, and then compared with the standard colorimetric card, to determine the pH value of the solution.In the process of use, please do not expose the test paper to sunlight, air, acid or alkaline gas, should be stored in dry, cool, away from light.Widely used in human health,cosmetics, soil testing,environmental protection,daily chemicals,food safety,agricultural drug testing and so on.