Blank

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In the laboratory world, a blank, as defined by the United States Environmental Protection Agency via its SEDD Specification Version 5.2, is "a quality control sample made to contain negligible (or unmeasurable) quantities of the analyte(s) of interest. Detection of an analyte in a blank is an indication of contamination."[1]

References

  1. ↑ U.S. Environmental Protection Agency (6 July 2011). "SEDD Specification 5.2 Resources". http://www.epa.gov/fem/seddspec52.htm. Retrieved 20 May 2014. 
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