Specifications:Color: GreenPH Range: 3.5-8PH ( 3.5-7 Acid, 7-8 Alkaline)Moisture Range: 1-10 ( 1-3 Dry, 3-7 Nor, 7-10 Wet)Relative Light: 0-2000LUX ( 0-200 Low, 200-500 Low+, 500-1000 Nor, 1000-2000 High)Probe Tip Size: 10mm4mm4mm / 0.4"0.16"0.16"Probe Length: 180mm / 7.09"Product Dimension: 255mm62mm36mm / 10.01"2.44"1.42"Net Weight: 58g / 2.05ozHow to usedStep 1: Clean the surface soil layer's all organic impurities which may affect the test results, such as the leaf or the root.Step 2: Clean the probe tip with wipes or abrasive cloth.Step 3: Insert the probe tip in the testing soil, the probe tip should LEVEL with root.Step 4: Reading the result when the value is stableStep 5: Testing it again on the different place of the testing soil, then calculate the average value.Note:If the testing value can't be stable, it is caused by the uneven density of soil, please kindly test it twice or three times again to get a average valuePackage Included:13-in-1 Soil Test Meter