How can sampling integrity be maintained when field conditions are challenging?

• A. Reuse containers and ignore sealing
• B. Document deviations
• C. Use clean containers, proper sealing, minimal handling, and document deviations
• D. Increase sample size

Answer: (C)

In challenging field conditions, preserving the sample’s original state and preventing contamination is the main goal. The best approach combines using clean containers, ensuring proper sealing, handling the sample with minimal contact, and documenting any deviations from standard procedures. Clean containers stop contaminants from entering and altering the sample. Proper sealing prevents leakage, evaporation, and entry of dust or moisture during transport. Handling the sample as little as possible reduces risk of cross-contamination and changes in temperature or composition. Documenting deviations provides a clear record of any departures from protocol, so results can be interpreted accurately and traceably. Reusing containers and ignoring sealing invite contamination and leakage; simply increasing the sample size doesn’t fix integrity under field conditions; documenting deviations alone helps but doesn’t prevent the root issues.