Haobase 80 Strips Full pH 1-14 Test Indicator Litmus Paper Water Soil Testing Kit

Vehicle radiator coolant tested and shows within same range as brand new. With modern aluminum engine blocks, protecting the composite coated steel head gaskets from acid build up in the coolant is as important as checking the specific gravity for proper freezing temperature.

I just want something simple to test the water PH for school project. Thus comes in handy. No fancy readings and charts.

They worked well for the class experiment.

price and quantity is great

The paper strip dimensions are about 3/8"wide x 2-1/8" long. The strips are bound in a handy, convenient book and separate easily from the binding. They indeed change color depending on the pH of the test specimen. Interpretation of the color change match is slightly difficult.

We used these for a science lab and they worked out well.

I bought these for a science project. They get the job done but lack insteuctions. It didnt state which number was a base vs acid. easily googled the info but this information should have beeb included. They are just paper so plenty on the pack. I cant compare to other brands for accuracy as I didnt have any other ones on hand.

Didn't work the best. Colors didn't align with chart that well. Ended up using them twice, didn't trust the results.

Don't bother ordering these test strips. Not only was the shipment late ( I had a chance to delete the order at the time, which I should have done) but all it is, is just a small matchbook of strips of paper. That's all! There are absolutely no instructions on how to use them! There is a color code chart but no key to what these colors mean. Unfortunately, I wasted my money and I'm just going to toss them.

tried on several samples. no changes to any of the strips. I will be returning!