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This dual purpose electronic meter tests soil pH and combined nutrient levels in about one minute. The pH portion of the tester measures pH values within a range of 1-9. The fertility portion of the instrument measures the soil’s nitrogen, phosphorus, and potash (NPK) content in combination. Complete instructions and a pH preference list for 350 plants are included. One AA battery is required (not included).
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🇺🇸 Ship from USA · On Agora since 2025
$25.95