Massachusetts Certification Category 41 Practice Exam 2026 – Your Comprehensive All-in-One Guide to Success!

Tolerance is the maximum amount of pesticide residue that is legally allowed to remain on or in food after treatment. Regulators set these limits after safety evaluations to protect consumers, and the values are specific to the pesticide, the crop, and sometimes the processing method. Tolerances are usually expressed as mg/kg or parts per million. They define enforcement limits: foods with residue at or below the tolerance are considered compliant, while higher residues can trigger enforcement actions. This concept is about residue limits, not storage temperatures, application intervals, or label color.