PH 0.5-5.0 Litmus Paper Acidity PH Paper High Accurate Quality litmus Tester Numerical range 80 Strips
Instructions for use:
1. Take the test strip into the measurable solution, half a second after the comparison with the standard color plate, that is, the PH value.
2. This test paper is not suitable for weak buffer solution and concentration of less than 0.01% of the acid-base solution, and the color of the solution.