Which liquid pesticide formulation consists of a small amount of active ingredient (often 1 percent or less per unit of volume) dissolved in an organic solvent?

• A. Ready to use low concentrate solutions (RTU)
• B. Emulsifiable concentrates (EC)
• C. Wettable powders (WP)
• D. Granules (G)

Answer: (A)

The key idea is a liquid formulation where a very small amount of active ingredient is dissolved in an organic solvent to form a true solution, packaged ready to use. This describes ready-to-use low concentrate solutions, which hold about 1% or less active ingredient by volume and don’t require dilution before application. Emulsifiable concentrates, while also liquid, are concentrated and higher in active ingredient and are meant to be diluted with water to form an emulsion. Wettable powders are dry formulations that must be mixed with water to create a suspension, not a true solution in solvent. Granules are solid particles, not liquids. So the described liquid form fits the ready-to-use low concentrate solutions.