Which liquid pesticide formulation may approach 100% active ingredient?

• A. Emulsifiable concentrate
• B. Aqueous solution
• C. Ultra-low volume
• D. Dust

Answer: (C)

Ultra-Low Volume formulations are designed to deliver a very small amount of liquid while carrying a high concentration of active ingredient. The idea is to minimize the solvent or carrier and spray a fine mist that still delivers the needed dose. Because the carrier volume is so low, the mixture can be nearly all active ingredient, approaching 100% active ingredient, with only small amounts of inert additives.

Emulsifiable concentrates, while concentrated, require dilution with water and still include solvents and emulsifiers, so the active ingredient percentage isn’t near 100%. Aqueous solutions have the active ingredient dissolved in water, so water makes up most of the formulation, keeping the active percentage well below 100%. Dust is not a liquid at all, so it doesn’t fit the “liquid formulation” category.