What is the acceptable variation for pesticide calibration?

The acceptable variation for pesticide calibration being ±10% is based on standards intended to ensure that pesticide applications are effective and that users are applying the correct rates. Calibration is crucial for maximizing efficacy while minimizing environmental impact and potential damage to non-target organisms. A ±10% variation allows for a reasonable margin of error in measurements and adjustments that can occur during application, while still maintaining an effective and safe level of pesticide usage. This level of tolerance strikes a balance between precision and practicality in real-world application scenarios, ensuring that applicators are within the recommended guidelines for effective pest management without over-application or under-application of the product. This is essential not only for maintaining compliance with regulatory standards but also for achieving desirable outcomes in weed control practices.