How to apply acid

1. First flush the system.

2. Verify there are no water leaks in the field.

3. Verify the system is operating with the proper pressure.

4. Inject the acid for required time and, during the injection, measure the pH at the end of the drip line to ensure it is reaching the target.

5. For periodic injection regimes, after the injection has finished, continue to irrigate after the injection to remove the remains of the acid in the system (minimum 30 minutes, and sufficient to reach the last dripper treated – see travel time covered earlier in the chapter).

6. It is recommended to check the pH is back to normal to verify.

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