What information should be documented during sampling?

The correct answer encompasses a comprehensive set of information critical for ensuring the accuracy and reliability of sampling data in occupational hygiene monitoring. Documenting daily activities, personal protective equipment (PPE) used, worker name, area location, calibration results, and sample equipment used provides a clear context for the data collected.

This detailed record-keeping helps in several ways:

1. Traceability: Knowing who was involved in the sampling process and the specific conditions under which sampling occurred can help in future assessments and ensure that the findings can be replicated or verified.

2. Contextual Understanding: Information about the environment, including the specific location and activities taking place, allows for better interpretation of the results. For instance, the type of work being done can heavily influence exposure levels.

3. Calibration Results: Documenting calibration results assures that the sampling equipment was functioning correctly at the time of sampling, which is essential for data validity.

4. PPE Usage: Recording what PPE was used provides insight into the adequacy of protective measures in place during the sampling, which can be important for evaluating worker safety.

By contrast, while documenting weather conditions, the duration of sampling, or random observations about the environment might provide some useful information, they