Hanna Copper Checker

[Phlynamjax]

Hello,

Does Hanna Copper check need to be calibrated? I have been using this unit for about 2 years and hard to believe this can go forever without calibrating it.

 

[Spieg]

Don't recall any info about calibration in the documentation. Maybe contact Hanna and ask?

 

[CK00020]

I think they sell a calibration kit, I may even have one.

 

[Phlynamjax]

I think a calibration kit comes with the solution and specific ppm for verification. But how do you actually calibrate the unit?