Which statement describes a disadvantage of EC and ULV formulations, aside from efficacy concerns?

• A. Solvents may degrade hoses and pump parts
• B. They have no disadvantages
• C. They are always safer
• D. They do not work in cold weather

Answer: (A)

EC and ULV products rely on solvent carriers to keep the active ingredient in suspension and to aid coverage. Those solvents are often harsh on sprayer components, especially rubber and plastic parts such as hoses, gaskets, seals, and pump packing. Over time, exposure to these solvents can soften, swell, or degrade these parts, leading to leaks, reduced pumping efficiency, or even equipment failure. That means a real, practical disadvantage beyond just how well the product works is the potential damage to the sprayer itself and the increased maintenance or parts replacement needed. The other statements aren’t accurate—these formulations aren’t universally safe, and their effectiveness isn’t guaranteed in all conditions, and they aren’t universally unaffected by weather or temperature.