Hanna Salinity Pen Repeat Calibration Error Fix Trick

Troubleshooting tip:

If your hanna salinity pen fails to calibrate 3-5 different satchets and keeps getting ERR… the issue might be the battery!

I found that out the hard way after some googling. I never thought it was the battery because the battery percentage was still showing 90 to 95%.

I knew things were wonky when all of a sudden while mixing salt water it kept saying the specific gravity was 1.013 or 1.00 instead of 1.033 when I was trying to dilute it.

So the next time you’re having problems calibrating, try that! 🙂


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