3-in-1 Soil pH Water Moisture Light Tester Meter For Plants Garden Seeding Grow
PH range: 3.5-8PH (3.5-7 acidic, 7-8 alkaline). Step 3: Insert the probe tip into the test soil, the probe tip should be LEVEL with the root. Step 5: Test it again in the different place of test soil and then calculate the average value.