Students, teachers, and gardeners alike love the economy and simplicity of this major elements soil test kit. Rapid test procedures and laminated color charts show trace-low-medium-high concentrations of nitrogen, phosphorus, and potassium, plus pH with a range of 4–8.
It includes enough materials for 15 tests of each factor, except for pH which comes with enough materials for 30 tests; garden guide; and soil handbook all packed in a sturdy plastic case.
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