Cheaper solution than a good pH meter, and in my experience more than accurate
enough for gardening, is good pH paper, like pHydrion. The 1-13 range is
fine for most purposes, runs about $6-8 for a roll that will last most folks
There are also multi-range pH papers that can measure down to 0.1 unit.
I inherited a couple of sets of these from when I worked in the lab. pH
meters were finicky then and expensive and I cannot imagine your average
gardener needing one.
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