A label's concentration data is commonly expressed as which of the following?

• A. Brand name
• B. Color code
• C. Percentage by weight or pounds per gallon
• D. Pest name

Answer: (C)

Concentration data on a pesticide label shows how strong the product is and how much active ingredient is present in a given amount of solution. The label usually expresses this as a percentage by weight or as pounds per gallon. A percent by weight communicates the proportion of active ingredient in the total formulation, which lets you calculate how much to mix to reach the desired strength. Pounds per gallon reflects the product’s density, helping you determine how much of the concentrate to combine with water to achieve the target spray strength. Brand name, color code, and pest name identify the product or its use, but they don’t indicate potency or mixing requirements. So the concentration data is given as percent by weight or pounds per gallon to guide correct dilution and application.