Poolmaster 23225 1/2-Ounce OTO and Phenol Red Replacement Indicator Solutions For Spa and Swimming Pool Water Testing

Very happy to be able to buy replacement solutions instead of having to purchase a whole new kit. I test the pool water frequently and mostly for chlorine and ph levels so I use a lot of these solutions in particular. They are accurate and work well.

Perfect size and cost. Works great.

Correct chemicals

Good enough for my needs

Cheaper than the pool stores. Good value for the money.

Add drops drops to your tester and it tells you if you’re chlorine and pH or too low or too high definitely lasts an entire season with many testsYou will definitely need to have the plastic container tester to put the water in

If you like your test kit, then all you need to do is get these replenishing chemicals so that you don't have to keep buying the entire test kit.

I do not like this kit at all. I have used it about 10 times so far over the course of 5 days. I use bromine in my hot tub. I assumed this kit would be more accurate than the bromine test strips we were using. We have two brands of test strips we check our levels. So I tried the liquid test kit. Results every time I have used it shows that my bromine levels are maxed out above 11ppm and my PH is high at 8.2. Both test strips read 2ppm Bromine and PH at 7.4. So I used PH down if lieu of the liquid test results thinking the strips were not correct. Test strips both now read PH at 6.8. Did a follow up with liquid test kit, and results were exactly the same before I used the PH down. WTH. So I cannot trust the results of the liquid test kit and quit using it. I now went back to using the two brands of test strips cross checking with each other. Had to raise my PH levels back to 7.4.