3 in 1 Soil Humidity Tester PH Moisture Light Test Meter For Garden Plant Flower
(4) “PH” key is correspondent to PH 8-3.5 on the table. 7 indicate neutral, the lower the value is, the higher the acidity is. 3 in 1 Soil Analysis Tester. 4-7 (green part) indicate water suitable, 8-10 (blue part) indicate too wet.