there not the cheapest out there but they last for ages and are growers choice I have their combi meter plus their ec stick and that stick I've had for over 4 years
A few of us including me have had great luck with Apera. I have been using my PH60 for over a year, and have checked calibration numerous times, and it has stayed within about 0.02 or so of the standard buffer the entire time, it has not required calibration since I bought it. I think it is a bit cheaper than the equivalent Bluelab, but not much. One nice aspect of the PH60 is that the sensor is replaceable at a price not much more than the cost of el cheapo pens that are garbage. But as St. Tom says, the bluelab meters are great too. I came close to ordering their soil meter, but haven't pulled the trigger.
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