When should field calibration be performed for air sampling devices?

Field calibration of air sampling devices is crucial for ensuring the accuracy and reliability of the measurements taken during asbestos air monitoring. Performing calibration at both the beginning and end of the sampling period establishes a baseline for how the device is functioning initially and checks for any potential drift or changes in performance after the sampling has occurred.

By calibrating at these two critical points, technicians can account for any variability that may affect the readings throughout the sampling duration. The initial calibration confirms that the device is set up correctly and will provide accurate readings from the start. The calibration at the end serves to ensure that the device has maintained its performance throughout the sampling duration and allows for adjustments if any discrepancies are found.

This practice is particularly important in environments where contaminants can affect performance, and it aligns with best practices and protocols in the field of air monitoring for asbestos. Regular calibration is essential for maintaining quality assurance in data collection, as it helps prevent misinterpretation of results that could lead to safety risks or non-compliance with regulations.