“They work. The pH strips come in a clear plastic container to keep them dry. I bought them to test the pH of my many different kinds of shampoo as I read it is best if they have a pH between 3.5 and 4.5 They all were falling within that range so I thought the strips didn't work. Then I went and tested one on vinegar and it registered a very different pH so I felt reassured they were working. I can't believe all my shampoos were within the recommended pH.I also plan to use them to test the level of my beta-hydroxy acid (BHA) exfoliant to see if it is in the recommended range to be effective and my alpha hydroxy acid (AHA) too.”
“Tests well Great value. These work well, I bought some for me and some for a friend who is just starting fermenting.Like all ph strips, and Ive now used a few it is a closest match kind of reading. Its not PinPoint accuracy, but more than sufficient to determine safety of acidified foods for shelf stability.”
