Which statement about measuring and/or transferring pesticides is TRUE?

• A. Metal measuring utensils are recommended over plastic.
• B. Most dusts, powders, and dry formulations are measured by volume.
• C. The measuring container should be left unused until the end of the day.
• D. After adding the pesticide to the partially filled spray tank, rinse the measuring container and pour the rinse solution into the tank.

Answer: (C)

Measuring and transferring pesticides safely hinges on getting the exact amount into the spray tank and minimizing exposure and contamination. Use a dedicated, nonreactive measuring device—plastic is usually preferred over metal because some formulations can corrode metal and contaminate residues. For dry formulations, accuracy is best achieved by weighing them rather than relying on volume. When transferring, add the pesticide to a partially filled spray tank so it dilutes and mixes properly. After pouring, rinse the measuring container with clean water and pour that rinse into the spray tank to recover any remaining product. This practice helps ensure the full dose is in the tank, reduces waste, and protects you and the environment. Don’t leave the measuring container unused for the day; rinse and store it promptly to prevent cross-contamination.