3 In 1 Soil Moisture Meter PH Acidity Water Acidity Analyzer Acidity Humidity Su
ab 9,05 €
8.5-9.5 strong alkalinity. 4.5-5.5 strong acidity. Turn the key on the pen to pH, pH is the pH key, the corresponding value on the table is 8-3.5, alkaline is alkali, Acdic is acid, and the value 7 is basically neutral.
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