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"GGreg20_V3 is an inexpensive and useful device for checking the “purity” of: mushrooms, berries, vegetables, firewood, etc." I suppose that might be true, in
by leaving 4y ago
"GGreg20_V3 is an inexpensive and useful device for checking the “purity” of: mushrooms, berries, vegetables, firewood, etc."
I suppose that might be true, in a sense, if you live in the exclusion zone around Chernobyl.
Otherwise, the statement is absolute nonsense.
The SBM-20 (the cheap Russian Geiger-Muller tube used in the project) is not going to pick up anything from those sources. It's not sensitive to alpha, and not very sensitive in general.