Easiest PH test you will ever do!

[BWI]

HM Digital Ph Tester[/URL]
Easiest PH test you will ever do!!!​

Monitor your filter life in your Reverse Osmosis / Reverse Osmosis DI unit with any of the HM Digital TDS meters​

 

[mellowvision]

how often does it need to be calibrated?

 

[BWI]

how often does it need to be calibrated?

if you keep the cap full wet so that the PH tester stays moist, u will good.. If for whatever reason u have to calibrate it, it comes with the solution to calibrate it!

 

[mellowvision]

nice, thanks