| The Branch of Quality Systems (BQS) operates an Organic Blind Sample Project (OBSP).
One of the goals of the project is to document bias and variability for the National
Water Quality Laboratory (NWQL) through the use of blind quality assurance (QA) samples. From these summaries, districts can be informed of the NWQL's performance on QA
samples that parallel their own environmental samples.
The statistical data tables provide cumulative blind QA data information for all concentration ranges combined for every
analyte for every method OBSP assesses since January 1996.
The tables are presented in either an html format for ease of viewing or an Excel format (where indicated)
for ease of downloading the information for your use.
|
