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

Purchased when we realized the science teachers forgot and they students had a lab the next day. Received them same day and saved the day!

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.

Although I have the Blue Guardian PH pen, I purchased these PH test strips specifically to use for Kombucha making. I didn't want to cross-contaminate my hydroponics PH pen in my Kombucha SCOBI.The strips arrived quickly and were packaged safely.My kombucha kit came with a kit of test strips that were white and easy to read. These strips were yellow and slightly more difficult to read precise measurements. However...it comes with so many test strips that you can easily re-test for better clarification.One key method to assure these work properly is to hold the strip OVER the colors, not off to the side.It worked decently for my application. Not great, but ok.I would (still) recommend this to others

Has everything you need to test liquids including a plastic dropper.

The Litmus PH Test Strips set of 320 strips seemed like a good deal, but unfortunately, the results have been quite inconsistent. The strips frequently provided varying readings for the same solution, making it challenging to trust the accuracy of the pH measurements. This inconsistency poses a significant issue, especially for professional or precise use. Additionally, the color indicators are not always easy to distinguish between certain pH levels, leading to confusion. While the quantity is ample, the unreliability and lack of clear, consistent results make these strips fall short in terms of accuracy and dependability." Paper not thick at all and the quality is the worst that I've seen

I tested this on water, saliva, and Kombucha just to make sure it changed colors since some reviews said it didn't. In each instance the color did change, but after letting is sit for a minute, the colors were close to the same or changed as it ran through the paper.The color scale that comes with the paper has some colors so close, it was hard to tell which color was correct. I will not repurchase. I got it at a cheap price so I will not complain much. The pipettes was nice to add but they are so small, I thought they had shipped without them. I found them in the plastic with the paper.

Work great

I liked that I got a lot of test strips to run my class. The scholars could make a lot of mistakes and still get good results testing the pH of household chemical mixtures. I got more than 1 copy of the colors of the pH values.