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Ricky Shaw · May 11, 2017

Hey Mark, how long those probes last before you need to replace in the Hanna meters?

I had to replace one already at a year. I've got two and the other is still fine. Mine started reading wacky, up and down, and would not recalibrate.

May 11, 2017	#129
Ricky Shaw Tomatovillian™ Join Date: Aug 2015 Location: Zone 6a Denver North Metro Posts: 1,910	Hey Mark, how long those probes last before you need to replace in the Hanna meters? I had to replace one already at a year. I've got two and the other is still fine. Mine started reading wacky, up and down, and would not recalibrate.