Originally Posted by Douglas.Curtis
Is this for Bluelab pH pens?
I stored my Hanna in r/o for years with zero issues. I also store my cheapie brand Jellas in r/o with zero issues.
Not only bluelab, thats the proper way all ph meters and pens should be stored
the thing with r/o is that it actually withdraws the internal solution inside the ph meter over time. the little glass bulb is permeable.
thats why it should be stored in KCI as it "fills up" internal chemistry and prevents withdrawing it.
when there is no kci solution at hand, its okay to store the probe in pH4.0 calibration solution for a few days.
As far as i know r/o is one of the worst solutions the probe could be stored in.
I believe what you are stating. No doubt.
Did you ever tested how accurate they still are and do they respond fast and stabilize quickly when testing pH ?