Purpose: Samples that are preserved prior to filtration can no longer be analyzed for dissolved parameters due to data integrity impacts. Preservation begins the digestion/extraction process of dissolved parameters.
Most Commonly Impacts:
- Dissolved Metals! Samples submitted in preserved bottles for dissolved metals cannot be analyzed for dissolved metals as the digestion process will have begun and bias data
- If field filtration is not an option, samples can be lab filtered. Submit the samples in an unpreserved container
- If there is no unpreserved container in the field, rinse the preservative out of a container with DI water and extra sample before filling with sample for submission to the lab
Process: The lab contacts you to confirm how to proceed with the sample.