Copper EDA dilution and surfactant: Which statement about Copper EDA usage is true?

• A. Copper EDA may need to be diluted depending on site and targets, and may require a surfactant
• B. Copper EDA should be used undiluted at all sites
• C. Copper EDA is unaffected by site conditions
• D. Copper EDA never requires a surfactant

Answer: (A)

Copper EDA works best when mixed to fit the specific water body and the target organism. Because site conditions and what you’re aiming to control vary, you may need to dilute the product to reach the label-recommended concentration for that situation. A surfactant is sometimes needed to help the product spread and wet surfaces, improving contact with algae or other pests, especially when water has surface films or poor wetting. Therefore, the statement that dilution may be needed and a surfactant may be required is true. Using it undiluted at all sites isn’t correct, site conditions can affect efficacy, and a surfactant isn’t always required. Always follow the product label for exact dilution and adjuvant guidance.