Digital Swimming Pool Water Tester, 2 In 1 pH CL2 Chlorine SPA Tester Electronic pH Level Tester For Hot Tub Pond Water Testing Kit With Probe And Large Screen Displays Monitor Analyzer

Didn't understand how calibrate or read results. The dial did not seem to react or change when put into water. It was probably my fault, but I reurned item as it was no help to me in regulating my spa.

I was somewhat doubtful that a simple 2 probe electrode device would work to measure free chlorine.I calibrated the device, used it as directed and output from moment to moment varied by 80%!As a science technician of 20 plus years experience, I like to think I know how to operate such sensors.Avoid

Ok for what I paid. Not as straightforward as hoped

Product is nice and dispatching was fast

Having rashly purchased a hot tub during the covid lockdown a few years back I have a machine that seems to require more maintenance than the wicket at Old Trafford Cricket ground. Getting the chemical balance correct is absolutely key to its functioning; that of course and the electricity supply. Hot tubs give your electric meter an apoplexy and hence it doesn't always pay to leave it on. Once you switch it off the chemicals are out of sync and you need to start a new process. This PH meter electrode is very useful in this regard. As the manufacturer states all you need to do is place it in the solution and press the button to be measured. The Water quality test analyzer gives a clear reading and is easy to use because of of its portability.

Don’t bother. Great for keeping the back door open.

Tried it for a month and then tested the water with a test strip and my water quality was not safe to use

Not the best, calibration is debatable