How to calculate the concentration of acid required

1. Prepare a clean bucket with 10 liters (quarts) of irrigation water.

2. Fill a measuring tube or a syringe with the acid you intend to use. If the acid is of a high concentration, i.e. 75 – 99%, it is recommended to dilute it 10 fold before calibration.

3. Drip the acid gradually (small amounts) into the water container while mixing.

4. Measure the pH level of the water in the container until it reaches the required level:

a. pH 2.0 is recommended for periodic injections
b. pH 6.0 – 6.5 is recommended for continual injections.

5. To calculate how many liters of acid you require per cubic meter (gallon) of water:

a. Take the amount of acid (in ml) (in ounces) required to acidify the 10 liters (quarts) of water and divide this number by 10 (2.5). This gives you the amount per single liter (gallon) of water.

b. Multiply this number by 1,000. This is the amount of acid you require per cubic meter (m3) of water.

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