(SOIL pH and MOISTURE TESTER)

Model: DM-15

Although we are apt to think that proper amounts of manure and moisture added to the soil are sufficient for vegetable grow, excessive acidity or alkalinity or moisture deficiencies will inhibit the effective absorbtion of nutriments, Therefore, to grow good crop, careful attention must be paid to the relation ship between soil acidity and moisture.

USE THE pH METER:
1. If the soil to be tested is dry or contains much manure, the meter will not indicate a correct pH value. Therefore, sprinkle about a bucketful of water on the soil, and wait 20-30 minutes, before testing.
2. Before using the meter, be sure to thoroughly polish its metallic surface with a piece of whetting cloth or sandpaper. When using a brand-new meter, be sure to insert it into the soil a few times in order to remove the oily impurities from it’s metallic surface.
3. Insert the meter directly into the field or paddy soil under consideration. Completely embed the metallic surface and tamp down the surrounding soil so that it adheres closely to the meter’s metallic electrode surface.
4. About one minute after inserting the meter in the soil, the pointer will cease to deflect-the pH value of the soil may then be read.
5. The meter may some timed register different values depending on soil condition,-such as, adhesion to the meter’s metallic sure-face, moisture content, or the amount of manure it contains. It is therefore ideal to tank an average of several measurements.
6. In order to determine whether or not liming has been properly done, after one or two weeks mix the soil well and measure its pH value.