Apera Instruments, LLC-AI3719-E Apera Instruments PC60-DE pH/Conductivity Replacement Probe for ZenTest PC60-Z Smart Multi-Parameter Pocket Tester

Replacement wouldn’t hold or maintain a PH level even after multiple calibrations. Would fluctuate from -2 to 16. Returned and went another route. I love apera but have been having issues with their hardware and support as of late.

Probes stored properly and used daily. My last Oakton meter lasted 3 years before the probe died. This is a sham of an item and should not be sold. Refund is needed asap

Broke after a month, It reads ph but no longer reads EC/TDS, figures return window just closed too, for $100 tip that I’m extremely careful with it and is always kept in probe solution, to just stop working after a month is a little ridiculous