Multifunctional Soil Tester 3in1 Gardening Soil Moisture PH Meter for Outdoor Garden Item Type: Soil Tester Material: ABS pH Meter Battery: 1.5V 2xLR44 (not included) TDS&EC Pen Battery: 3V 1xCR2032 (not included) Purpose: Test the pH of horticultural soil moisture Soil Meter: pH value of soil pH ＜4.5 Very strong acid 4.5—5.5 Strong acid 5.5—6.5 Acidity 6.5—7.5 Neutral 7.5—8.5 Alkaline 8.5—9.5 Strong alkaline ＞9.5 Very strong alkaline TDS&EC pen: Electrical Conductivity: 0-9999us/cm Degrees Celsius: 0.1-80.0°C Fahrenheit: 32.0-176.0℉ TDS: 0-9999ppm Accuracy: ±2% pH pen: Range: 0.00-14.00pH Accuracy: 0.01pH Accuracy: ±0.01pH Working temperature: 0℃-60℃ How e: 1. When measuring the pH and humidity of the soil, first insert the probe into the soil as deeply as possible. (10CM has been uploaded) 2. Move the button on the pen to MOIST, MOIST is the moisture button, the corresponding table is MOIST, DRY is dry, WET is wet, the value 1-3 (red part) indicates that water is needed, 4-7 (green Part) is appropriate. Please adjust the watering time according to the plant species. 8-10 (the blue part) means it is too wet. 3. Move the button on the pen to PH, PH is the pH key, the value on the corresponding table is 8-3.5, ALKALINE is alkali, ACDIC is acid, and the value 7 is basically neutral. The smaller the number, the greater the acidity. Please Adjust the soil pH according to the plant species. 4. The LIGHT key is the illuminance. The measurement range is 0-2000 lm. The larger the value, the stronger the light. Please decide whether you need shade according to the plant species. 5. Move the button on the pen to MOIST, MOIST is the moisture button, the corresponding table is MOIST, DRY is dry, WET is wet, the value 1-3 (red part) indicates that water is needed, 4-7 (green Part) is appropriate. Please adjust the watering time according to the plant species. 8-10 (the blue part) means it is too wet. 6. Move the button on the pen to PH, PH is the pH key, the corresponding table is 8-3.5, ALKALINE is alkali, ACDIC is acid, value 7 is basically neutral, the smaller the number, the greater the acidity, please Adjust the soil pH according to the plant species. The LIGHT key is the illuminance. The measurement range is 0-2000lm. The larger the value, the stronger the light. Please decide whether you need shade according to the plant species. Soil pH Soil pH is also called "soil reaction". It is the acid-base reaction of the soil solution. Mainly depends on the concentration of hydrogen ions in the soil solution, expressed in pH. A solution with a pH value equal to 7 is a neutral solution; a pH value less than 7 is an acidic reaction; a pH value greater than 7 is an alkaline reaction. TDS&EC pen: 1. Before use, first unplug the electrode protective cover 2. Press the power button, put the electrode into the solution to be tested (note that the solution should not be higher than the immersion line) 3. After the value is stable, press the HOLD button and take out the reading. 4. After use, press the power button to turn off the meter, wipe the electrode clean, and put the electrode protective cover in. pH meter: 1. Remove the protective cover. 2. Clean the electrode of the pH meter with distilled water first. And wipe the electrode dry with filter paper. 3. Turn on the switch located on the battery compartment. 4. Insert the pH meter into the liquid to be measured until the liquid is immersed in the "immersion line", and conditions permit, the solution can be immersed slightly above the "immersion line". 5. Gently stir the solution and wait for about two minutes. Read the displayed value. 6. Finished use. Clean the electrode. Turn off the switch. Put on a protective cover.