Iowa Pesticide Applicator Practice Exam

How is the amount of formulated product calculated from active ingredients?

1. Active ingredient amount multiplied by percentage concentration.

2. Active ingredient amount divided by the percentage concentration.

3. Percentage concentration divided by active ingredient amount.

4. Active ingredient amount plus percentage concentration.

The correct answer is: Active ingredient amount divided by the percentage concentration.

To determine the amount of formulated product based on the active ingredients, the process involves understanding the relationship between the amount of active ingredient and its percentage concentration in the formulated product. When you have the amount of active ingredient and the percentage concentration, you can calculate the total amount of formulated product by dividing the active ingredient amount by the percentage concentration (as a decimal). This is based on the concept that a percentage represents a fraction of the total. For instance, if you have 10 grams of an active ingredient that is present at a concentration of 25% in a formulated product, you convert the percentage into a decimal (25% = 0.25) and divide: Total formulated product = Active ingredient amount ÷ Percentage concentration Total formulated product = 10 grams ÷ 0.25 Total formulated product = 40 grams This calculation illustrates how the formulation is related to the concentration of the active ingredient, enabling the correct estimation of the total product necessary for applications.