What is the purpose of a 'rinsate' in pesticide handling?

• A. A cleaning solvent added to the mix tank
• B. The rinse water used to clean equipment after application; must be collected and disposed per label
• C. A leftover pesticide stored for reuse
• D. Water that has never contacted any pesticide

Answer: (B)

Rinsate is the rinse water you use to clean spray equipment after applying a pesticide. That water can still contain pesticide residues, so it’s treated as contaminated waste. Because of the potential for environmental harm or human exposure, it must be collected in a labeled container and disposed of according to the pesticide label directions or local regulations.

This isn’t cleaning solvent added to the mix tank, nor is it leftover pesticide kept for reuse, and it’s not simply water that has never contacted pesticide. The key idea is that rinsate comes from cleaning after use and carries residues that require careful handling.