The amount of active ingredient in soluble powders (SP) is usually above which percent?

• A. Below 10 percent
• B. Above 50 percent
• C. 15–25 percent
• D. 30–40 percent

Answer: (B)

Soluble powders are formulated to dissolve in water and deliver a concentrated amount of active ingredient in each spray. To be effective while keeping the solution reasonably practical to apply, these products typically contain a high percentage of active ingredient—usually more than half of the product by weight. That’s why the correct choice is above 50 percent. The lower ranges would mean too little active ingredient per unit of product, making them less effective or requiring larger volumes. Always check the specific product label for exact percentages, but soluble powders are generally in the above-50% range.