How often should fumigation equipment be calibrated?

Calibration of fumigation equipment is crucial to ensure accurate delivery of fumigants and to maintain safety standards. The correct answer emphasizes the importance of adhering to the manufacturer's guidelines for calibration frequency, which typically encompasses careful considerations based on the specific equipment, its use, and operational conditions.

Manufacturers provide detailed instructions to optimize performance and ensure that the equipment is functioning efficiently. This might include factors like the type of fumigant being used, changes in environmental conditions, or equipment wear over time. By following the manufacturer's specifications for regular calibration, applicators can minimize the risk of over- or under-application, which can have significant safety and efficacy implications.

While options suggesting calibration only once per year or every time before use do highlight the importance of calibration, they do not reflect the variability that can occur based on usage and equipment conditions, making the manufacturer’s specifications the most reliable guideline.