What is a disadvantage of Dry Flowable (DF) / Water Dispersible Granule (WDG) formulations?

What is a disadvantage of Dry Flowable (DF) / Water Dispersible Granule (WDG) formulations?

• A. Spray mix requires constant agitation.
• B. DF/WDG is more cost-effective than WP.
• C. It can be stored indefinitely without caking.
• D. It never settles in the tank.

Answer: (D)

Dry Flowable and Water Dispersible Granule products are dry solids that must be dispersed evenly in water before spraying. The main drawback is that these solids tend to settle out in the tank if the mixture isn’t kept in motion, so the spray mix needs constant agitation or recirculation to maintain a uniform suspension. If mixing stops, solids can settle and cause uneven application, nozzle plugging, and the need to re-dispense or re-mix. This is why constant agitation is often cited as a disadvantage of DF/WDG formulations. The notion that it never settles in the tank would conflict with how these suspensions behave in practice, which is why maintaining mixing is emphasized.

Dry Flowable and Water Dispersible Granule products are dry solids that must be dispersed evenly in water before spraying. The main drawback is that these solids tend to settle out in the tank if the mixture isn’t kept in motion, so the spray mix needs constant agitation or recirculation to maintain a uniform suspension. If mixing stops, solids can settle and cause uneven application, nozzle plugging, and the need to re-dispense or re-mix. This is why constant agitation is often cited as a disadvantage of DF/WDG formulations. The notion that it never settles in the tank would conflict with how these suspensions behave in practice, which is why maintaining mixing is emphasized.