Which aspect does NOT need to be documented during sampling?

Documentation during sampling is a crucial part of ensuring the quality and integrity of the samples collected. Among the key aspects to document are the date and time of collection, the method of sample collection, and the unique identification code of the sample.

When documenting the date and time of collection, it provides context for the sample which can be critical for analyzing changes over time, especially if multiple samples are collected across different periods. The method of sample collection is necessary to verify that the sample was obtained in a consistent and scientifically valid way, which can affect the test results. The unique identification code is vital for tracking and referencing the sample throughout the testing and reporting process, ensuring that the results can be linked back to the specific conditions under which the sample was taken.

In contrast, the collector's height does not influence the quality of the sample or the integrity of the data associated with it. While stature might have implications in some specific sampling scenarios, it is not a standard requirement for documentation in most contexts. Therefore, it is not necessary to record the collector's height during sampling. This simplifies and streamlines the documentation process, allowing for focused attention on the most critical details that impact the reliability of sample analysis.