Which action is NOT a recommended practice for maintaining field sampling integrity?

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Multiple Choice

Which action is NOT a recommended practice for maintaining field sampling integrity?

Maintaining field sampling integrity means keeping the sample representative and unaltered from collection through analysis. Reusing containers that have already been opened violates that principle because residues, vapors, or microorganisms from a previous sample can contaminate the new one, changing its composition and compromising results. Even if a container looks clean, there’s no reliable way to ensure it is free of contaminants, making cross‑contamination a real risk. Using clean containers eliminates initial contaminants, ensuring the sample starts fresh. Proper sealing prevents leaks and protects the sample from environmental exposure, preserving its integrity during transport and storage. Documenting deviations is also essential because if something unusual happens, there’s a traceable record that helps explain any data anomalies and maintains the chain of custody. So, the action that does not fit if you’re aiming to maintain field sampling integrity is reusing previously opened containers.

Maintaining field sampling integrity means keeping the sample representative and unaltered from collection through analysis. Reusing containers that have already been opened violates that principle because residues, vapors, or microorganisms from a previous sample can contaminate the new one, changing its composition and compromising results. Even if a container looks clean, there’s no reliable way to ensure it is free of contaminants, making cross‑contamination a real risk.

Using clean containers eliminates initial contaminants, ensuring the sample starts fresh. Proper sealing prevents leaks and protects the sample from environmental exposure, preserving its integrity during transport and storage. Documenting deviations is also essential because if something unusual happens, there’s a traceable record that helps explain any data anomalies and maintains the chain of custody.

So, the action that does not fit if you’re aiming to maintain field sampling integrity is reusing previously opened containers.

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