Public Service Announcement about Bluelab pH pen

Z

zz420

Member
Been using mine for almost 5 years no issues. Calibrated it like 3 times and just rinse it off and cap it up, nothing special.
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
Dreminen169 said:
I have noticed that with my blue labs PH pen that after I calibrate it it does not read the proper PH for an hour or two. Example I know my tapwater has a pH of 7.4 and that’s what my PH pen was reading before I calibrated it. After calibrating the pen I checked my tapwater pH and it was reading 6.4. I checked multiple samples recalibrated the pen and the same thing happened. I walked away for a couple hours came back and tested the same samples again and they read the proper 7.4 PH.The only reason I calibrated the PH pen in the first place was because the little check arrow in the bottom right hand corner was no longer checked so PS if you do not have the check arrow it’s time to calibrate.
Has anyone else experienced this with the blue labs PH pen?
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I,
bk78 said:
As xtsho said, everything can’t be 100% all the time. It’s possible you got one built on a Friday and the dude just wanted to head home for the weekend.
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That's me every day.
 
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