TESPERT Pool and Spa Test Strips Hot Tub Test Strips 7-in-1 125 Strips Pack, Chemistry Test Kit for Test Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, and Total Chlorine

The water in the hot tub turned cloudy after a week of adjusting chemicals based on these strips. After troubleshooting based on expert recommendations, the last possibility was the Ph was too high, despite these strips showing right in target range. Ordered a different brand, and sure enough, Ph was very high. Added some Ph down, and within a week, the water cleared up again. —-update; after submitting this review, the seller offered to refund the money. Which tells me, they believe in their product, and my experience was probably a fluke. So will try ordering again, but a bit before my other strips run out, just to do another comparison.

Compared to classic 5 titration kits it is more convenient, faster, cheaper and gives seven results instead of five, but it was not consistent with titration results. That could be due to old solutions, but to check via a third technique - ion selective electrodes, is cost prohibitive.

Work okay.

Thumbs up, will reorder.

it seems that every test strip reads a little different, from the next, but seem to do the job well, and the price seems good..

They do what they are made to do.

I use this product to check the water chemicals in my in ground pool.

Arrived on time easy to use and read very accurate

I'd been having trouble balancing my hot tub for a while. Though these test strips looked OK, things still felt off.I bought a drops test kit and compared it against my tap water. As you can see the tap water tests as being 7.2pH and 1ppm Chlorine on the drops test. (I should also point out thebhardness tests at 100ppm on dedicated hardness test strips, not shown here.)The strips show maybe 6.2, pH. Maybe the darker bit in the middle is 6.8, maybe 7.2. It's hard to tell. Hardness registers as zero.Moving to the spa water I'm trying to fix, these strips show I have about 1ppm bromine, which agrees with the drop test, still zero on the hardness, which tests at 100pm on other strips, but look at that pH! The strips show I'm lower than 6.8, but the drops test says I'm through the roof at 8.2+I wouldn't by these again.

Not accurate on any of the test spots. I kept adding chemicals and very little movement on the colour change. I retested with other well known strips and the readings were all fine. Don't waste your money

These strips are absolute junk! Do not waste your money. While I never expect any test strips to be 100% accurate (that's what the lab in my local pool store is for) I DO expect them to be in the ballpark. These strips are not anywhere even close the being accurate when compared to the results from my lab or even another brand of test strips. I've thrown them away let's see how well they measure the chemicals in my garbage can.

Initial testing with these strips suggested that virtually all measured results were way out of range. Subsequent tests with other test brands were consistently within acceptable ranges. A professional test a a pool supply location also showed all ranges within acceptable levels. Tried again with Tespert strips and again results were completely out of range. Perhaps a 'bad' batch, but glad I didn't adjust chemicals to meet these results. Not recommended.

The alkaline portion of the test is off completely. Out of desperation I ordered this brand instead of what I normally use. I couldn’t get the alkaline to test properly with using these strips. Finally I went to a sticks and bricks store and bought what I normally use and compared the test results….spent a few days fixing the pool water because by then I’d used way too much product to raise and steady the alkaline levels. Garbage.