Free Chlorine pH and Salt Tester for Pools and Spas – 7 in 1 Digital Swimming Pool Water Tester for pH, Salinity, Free Available Chlorine, ORP, TDS, EC, Temp – Saltwater Pool Tester

Works great

Guess I should have heeded others warnings about this device. The chlorine measurement does not work. It reads "0" when the pool store test says 3.5 ppm and my color test kit shows between 3 and 5 ppm. I followed the directions exactly and the pH was 7.4 (the manufacturer says the device requires between 6.5 and 8). The ORP also does not work. It just starts a slow climb from around 200 to the upper 300s and then shuts off due to timing out. Again, I have two other tests for ORP that show I'm in the desired 650 range for my salt water pool. Sending this one back--waste of my time.

We have a hot tub and recently switched to a chlorinator system. We needed something to accurately read chlorine levels. Unfortunately this did not work. It reads ph and salt fine but didn't ever pick up our free chlorine level which unfortunately ended up making us dump our water and start over because the chlorine levels were so high. This also takes a long time to read.

I was having problems getting an FAC reading as I saw in other reviews. First the ph must be in the parameters of 6.5 to 8 I believe. Second the parameters for FAC are 0.1 to 4 so if you are running above 4 ppm this tester won't work for you. Third I found I had to leave it in a vial of water for a few seconds for it to get the reading. I have taken distilled water and actually added chlorine to make sure the tester is working. So far I believe it to be accurate but I double check with strips to be on the safe side.

Takes all the guess work out of comparing colors on a dip strip. Works great right out of the box. Only need to recalibrate every couple months of use.

I ordered this product so that I would not have to take a sample of my pool water to the pool chemical store every time I wanted to get a basic reading on my salt and pH levels. This tester seems to do an accurate job of measuring those two things and it it helping me to keep my pool balanced. I am now able to add some chemicals as needed, use this tester to check the levels 24 hours later, then add more if applicable--it really takes the guess work out of things. I have not figured out the chlorine measurement yet--it keeps showing zero but that might be because my pH is too high right now--once I get the pH corrected, I will try the chlorine measurement again. In summary, this seems to be a fairly accurate and useful tester and I like using it much more than the test strips.

Not accurate at all compared the chlorine readings to Leslie's pool supply tests and the pen doesn't work at all. Don't spend one penny on this it's a scam by the sellers. They should be ashamed of themselves not having the right amount of chlorine can hurt someone even kill someone I'm returning this piece of crap immediately

Era lo que buscaba, el manual debería venir en español también, no explica dos mediciones