pH Test Strips - 200 Litmus Paper pH Test Strips for Urine and Saliva Level Testing (PHUNIV) - 0 to 14 Universal Plastic pH Strips Drinking Water, Kombucha, Pool, Spa, Hotub, Soap, & Urine and Saliva

Reasonably priced and works well. I use them to monitor the pH of my home brewed kombucha. Ideal pH is 3.5 to 4.5. If the solution gets much out of this range, the living organisms die and the brew goes bad. The solution tests at 3.5, and I am happily brewing with no problems. I have also tested brewed tea (basis for kombucha), tap water and filtered water. They work fine for what I need.

I believe that these strips are accurate. I dipped one of them into Listerine mouth wash and the acidity came up accurate, however, the results for my sourdough starter have been underwhelming. It could very well be user error, but it seems that the PH of my starter has yet to change over 4 days. The tell tale bubbles of starter have appeared, yet no change in PH. Lastly, I'm still confused as to which of the 4 PH squares are the ones that I should be recording, though this is likely due to the fact that I have not read the instructions. Overall a very good product. 👍

I purchased these Plastic pH Strips for a variety of uses, including testing drinking water, kombucha, and my hot tub, and they’ve proven to be a handy and reliable tool. Pros: Multi-Purpose: Suitable for testing water, kombucha, soap, urine, saliva, and more. Easy to Use: Clear color chart for quick and straightforward pH reading. Portable and Lightweight: Perfect for on-the-go testing, with no bulky equipment needed. Affordable: Great value for the number of strips included in the pack. Cons: Not as precise as digital testers, but accurate enough for general testing needs. These strips are perfect for anyone needing a quick and simple pH reading. Whether you're monitoring your health or maintaining your spa or kombucha brew, they’re an excellent addition to your toolkit! Rating: ★★★★☆

I got these for my son's science project, he says that they are easy to read (don't recommend them to people who are color blind as you need to match up the strip with the colors to get your level) and easy to use. You have to line up the color of the strip to the color on the bottle/paper which will tell you the number. Overall 9/10 for ease of use and accuracy!

They aren't accurate, in fact they never changed, NOT ONCE! While I tested a very acidic base (red) and a very alkaline base (purple) with my red dye and test tub of water for my plants. I know the red dye was working, yet the strips read 6-7 ph the whole time when in fact I went from 1 end of the spectrum to the other with multiple strips wasted along w my dye. These test strips are useless and a waste of money! Do yourself a favor & Get the droplets of red dye to mix e the liquid your testing and call it a day!! It's not worth killing your plants like I almost did!

These have been AMAZING!! What an eye opener! My husband gets gout flare ups if A. Eating the wrong food. But most important if water is acidic. We have been buying thos water from a water store for about 2 months now. One of the waters says its Alkaline and the other is regular water. We noticed he was getting gout flare ups and we couldn't figure out WHY?? We ordered the PH strips to test the water we were buying! Completely accurate!! (He used to be a watertech for aerospace). Thank goodness for these testing strips!! The water that was "alkaline" was at a 7. Which is "normal" drinking water. The regular drinking water tested as a "4"!!!!! Meaning very acidic!! Sorry for the story but, I wanted to explain the importance that everyone should buy these!!! These testing strips have helped SOOO much! Now we know why he was having gout attacks! The water was SOOO acidic and HORRIBLE!!

I selected these test strips to use for getting my hot tub's pH under control. Since they were advertised as usable for pools, spas and hot tubs and they had good reviews, I wanted to give them a try. Well, the increments on these strips are whole numbers only from 0 to 14. The pH increments on a pool test strip are in .2 increments, making these strips totally useless to me. Not able to return them since I had opened the package before realizing they were not going to work out for me. I will donate them to my science teacher friend to use in her labs.

I got these to test my homemade vinegars. They work very well as long as you follow the instructions. These strips are disposable and can only be used once, so don't try to reuse them again on other liquids. The resultant test colors on the strip may not 100% match the colors on the box or bottle, but it gives you a good idea of where the pH level falls for your tested liquid. I performed control tests by dipping one strip in filtered tap water (alkaline, high pH), a 2nd strip in white vinegar (acid, low pH), and a 3rd strip in cranberry juice (mid pH), and ended up with good results.