ph test

Hi, I don't want to lick soap, but I want to know if there's excess unreacted lye in my soap. Is there any way to test this? Is pH alone a good enough indicator? From what I've read, it sounds like the answer is no.

I have been noticing that pH strips could start out one color and then after several hours ie after the strips have dried, change in color to the extent that I might have interpreted the results differently if I observed the results at only one of the 2 times. My process is that I put several...

So, I was pH testing my liquid soap with pH strips. I have never usedPhenolphthalein and was thinking about ordering some. I know you can find it in some pool stores but in rural IL there aren't a whole lot around so, I started looking online for pricing. Some how I ended up reading about...