Yes I have several. How can I help you? Are you familiar with their electrical nature? I find moist soil works best. They are designed around a rough norm. Neither wet nor dry soil is very good, if you can even tead dry soil. The moisture is conductive. I have several to test them against themselves. I use them only for general trends. I am not expecting perfection. They will not tell you the buffering capacity of soil for example.ok, I guess that means No - in that case anybody from the UK or U.S ever used one of these - & how good are they ?
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