2 Pack Ph Test Strips, 160 Strips Ph.1-14 Universal Ph Test Paper Litmus Test Pa
It might lead to incorrectly showing test results. It will perfectly indicate the real acidity or alkalinity substance. You have to create a solution, using a dropper to drop a small amount of liquid on the test paper, use cotton swabs to dip the test material dripped into the middle of test paper to see the color change.