Interesting. First brand I've heard of that could make that claim! I'll have to look into them.
... not in my experience mate, or I wouldn't recommend them to folks... I have tested A8 meters against proper slurry tests of a few different soil brands (and against each other), and all were within 0.2pH of each other,... the A8 needs to used properly to get the best accuracy, that's for sure,....
>> Wallflower, the pH is good, so feed her lightly, and get what you can out of her,... likely the roots are a bit thrashed, and that makes for difficult recovery no matter what,... she'll finish face-first and mostly nekked, but that's the breaks for this plant,....
- but last thing I wanted was another electrode bulb-type soil pH probe that needs the same hand-wringing PITA care and maintenance that a pH meter requires! The A8 was a good compromise... I had my doubts, but it's been a valuable tool, saved a few plants that had in-pot pH's take ugly dives (what prompted me to try it), but thanks to it, got caught before any real harm was done.... Since then, it's been a gem for monitoring and catching any prob's before they got out of hand,... it has it's limitations, used wrong it'll give inaccurate reading, but that's true of any pH probe,... most common ones are testing after the plant has been fed (skews results temporarily), or in soil that's too dry or totally soaked; removed too soon from soil (it need to sit for a couple minutes to stabilize); that bi=metal tip needs to be kept clean, buffed out to remove any tarnish or corrosion,... needs to be stored in a non-abusive environment... My grow client stored his in an tiny outside plastic closet-sized storage unit with other nasty chem's for his landscape plants, and it killed the probe after a year or so,... mine is 4+ and still works well!
Try one out pop22, for what it is, I think you'll find it handy! 

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