Here at NASL our primary goal is to provide high quality data for estuarine, coastal, watershed research and monitoring projects. This water is provided via a Barnstead NANOpure II system. This system produces Type 1 Reagent Grade water equal to or exceeding standards established by the American Society for Testing and Materials.
All samples follow a strict storage and analysis schedule.
For dissolved analytes, after a sample is analyzed, the same sample container is placed farther along in the automatic sampler trap and re-analyzed. The mean of the two values is reported as the concentration for that sample. If only one of the duplicate pairs is in question, then only that sample is re-analyzed. This procedure is practiced for all dissolved analytes that are not consumed completely in the analytical procedure. For those that are completely consumed and for particulate analytes, duplicate samples constitute actual duplicate samples collected in the field and analyzed in the same analytical run.