Instructions:

How to analyze soil fertility 
1. Remove the topsoil about 5 cm first; Then pound the soil down to a depth of 13 centimeters. And remove all organic impurities in the soil, such as leaves and roots, that may affect test results. 
2. Soak the soil in water and make it muddy.
Wipe the probe clean with a clean cotton or paper towel. 
4. Move the function key to the first gear from the left. 
5. Insert the probe rod into the soil under test until the soil is no more than 2.5 cm away from the fuselage. Wait 10 seconds for the pointer to stabilize before reading the data. 
6. Record data. Remove the probe from the soil and clean the probe thoroughly. 
The judgment criteria for the analysis results are as follows 
TOO LITTLE 
Nitrogen is less than 50 parts per million 
Phosphorus is less than 4 parts per million 
Potassium is less than 50 PPM 
IDEAL range 
50-200 PPM 
4-14 PPM 
50-200 PPM 
TOO MUCH 
More than 200 PPM 
More than 14 PPM 
More than 200 PPM 
· unit PPM: PPM 
If the analysis shows that \"TOO LITTLE\" means: lack 
Use the right liquid fertilizer for each plant you grow. (please refer to the instructions on the fertilizer package for details) 
And if it turns out that the IDEAL is IDEAL 
According to the different plants you plant, use suitable fertilizer and apply it once a month in combination with irrigation. 
If the analysis says \"TOO MUCH\", it means TOO MUCH 
1. Water in large quantities to dilute and leach excessive nutrients; 
2. For potted plants, they should be replanted in new soil; 
Don't apply any more fertilizer, but add manure, compost, plant debris, leaves, and other organic matter to the soil. 

How do you analyze soil pH 
1. First remove about 5 cm of topsoil from the tested soil; Then pound the soil down to a depth of 13 centimeters. And remove all organic impurities in the soil, such as leaves and roots, that may affect test results. 
2. Soak the soil in water and make it muddy. (rain or distilled water is preferred) 
3. Move the function key to the rightmost gear. 
Wet the probe. Wipe off the rightmost of the three probe rods with a clean piece of cotton. 
5. Insert the probe rod completely into the soil under test. 
6. Wait 1 minute to read the data. 
7. After the test, clean the probe and dry it. 

Special note

Do not stick the probe into the soil for too long or test the liquid with the device to avoid damage.