Plastic pH Test Strips, Universal Application (pH 4.5-9.0), 100 Strips | for Urine, Saliva, Aquariums, etc.

I use this product as an affordable quick check of the pH for the nutrient water I use for my garden, greenhouse, hydroponic and aquaponic systems. Although I have a "proper" pH meter, maintaining the electrode is a hassle for this purpose, and honestly, its accuracy is overkill.The pH detection range of these strips is ideal for growing plants since most plants respond best to a pH of between 5.5 and 7.

In a chlorinated hot tub spa, these strips consistently indicated pH of 6.5 to 6.75, whereas two different brands of multi-test strips and a calibrated pH meter indicated 7.8 to 8.2

2 year shelf life - Expiration date on package 1 year from delivery

I am a retired industrial chemist and have used just about every type of pH measurement devise there is and usually stay away from test strips. While the strips will give you an approximate range of pH value, it is often hard to determine a specific value. With these strips the indicator colors are easy the use and each pair of colors is clearly specific to a specific pH value. Great tool!

I bought these for a simple quick pH test that I wouldn't need my meter for but unfortunately every water I test results in a 6.5 pH. I double checked these strip results against spa 7-way strips and a pH meter but these strips always came out different. After checking spa water, distilled water, tap water and hydroponics water all came out as 6.5 pH with these strips and those results are not accurate. Don't buy these if you want accurate pH readings.

These are the best imo, the plastic container that the sticks are contained in has a graph, or color chart that goes all the way down to 4.5, the others that I have ordered only go to 6.5, use them for my dogs because the P.H. reading has a lot to do with whether or not they may have a urinary infection or something going on with the kidneys. Very good product.

Easy to read. Good fair gradients. easy to handle. Consistent results, check with other doctor office product. All in all, a good product at a fair price. Fast delivery.

After dipping into water both dots quickly turn colors, but they bleed into each other and can be hard to determine if the green dot bleeds into the yellow dot and darkens it, making the yellow appear more orange than it should for your water. Try using so water runs off to the side of dots and cannot bleed together.