Clean-sampling procedures are recommended as a general practice when processing raw samples, particularly those for analysis of trace levels of inorganic and organic analytes. Check sample-designation codes and processing requirements for each sample. Requirements depend on program and laboratory protocols, study objectives, and data-quality requirements. Use only containers that arrive clean, baked, and capped. Discard any bottles that arrive uncapped .
All containers arrive precleaned and baked from the laboratory.
Do not prerinse or field rinse these glass bottles or vials. Samples to be analyzed for organic compounds are hereafter referred to as organic-compound samples. Set up a clean work area at the field site for sample processing. For inorganic-constituent samples, use plastic sheeting. For organic-compound samples, use aluminum foil.