What is the primary reason for using clean containers during sample collection?

Using clean containers during sample collection is crucial primarily to eliminate potential contaminants. When collecting water samples, any impurities or residues present in a container can inadvertently alter the chemical and biological characteristics of the water sample. Even tiny traces of substances from previously contained samples can lead to inaccurate analytical results, potentially leading to false conclusions about the quality of the water.

By ensuring that the containers are clean, you create an environment that allows for accurate representation of the water being tested, providing reliable data that is essential for assessment, regulatory compliance, or research purposes. Understanding this principle is vital for those involved in water sampling, as it underscores the importance of maintaining the integrity of the water sample from the point of collection through to analysis.