Litmus PH Test Strips 160 Strips, Professional Universal pH.1-14 Test Paper with Test Pipette Droppers, for Teaching, Student, Chemistry Experiment, Saliva Urine Water Soil & Diet pH Monitoring

I was about to leave a bad review and ask for my money back when I read another review that made me think about testing other things. I bought these strips to test the PH for my Orchid fertilizer to make sure it was in the right range. The test for that in my tap water both came out yellow looking pretty much like the original paper but after I tested orange juice, Windex , rice vinegar, and a few other things the papers actually worked. If your paper turns yellow rest assured that it’s in the range indicated by the color indication strips.

Work great

Delivered next day and works as expected

Este producto es confiable buen precio

If you need anything more specific than, "Eh, this is probably a base," skip these. They're already the same color as something-in-the-range-of-neutral yellow, so if anything is between 6 to 8, you won't be able to tell if there's a color change at all. I discovered this by trying to measure my soil's pH and discovering that it's something in the range of neutral, which is pretty much useless info.Fairly annoyed by the inability to get an accurate measurement, I tested a substance of known pH--baking soda, which should test at 9.5. The baking soda got a result of something-that's-moderately-a-base green, which is a green that is not even remotely similar to anything on their color chart. I could use my imagination and put it between green 9 and green 10, but only because I already knew that the pH was 9.5. Otherwise it would have been a mystery.TLDR: Only buy these if you want one of three pieces of information--Look, it's maybe acidic; Eh, that's probably kinda neutral; or, Ooooh, a base!

A bit of inconsistency in the results ! Once paper dries a bit with the exception of something very acidic all the paper strips look the same .

This is good and accurate pH paper. I tested it with vinegar and lye (after soapmkaing) and it showed true results. Comes with a few pipettes.

Just what I needed