Blank (solution)

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A blank solution is a solution containing little to no analyte of interest,[1] usually used to calibrate instruments such as a colorimeter. According to the EPA, the "primary purpose of blanks is to trace sources of artificially introduced contamination."[2] Different types of blanks are used to identify the source of contamination in the sample. The types of blanks include equipment blank, field blank, trip blank, method blank, and instrument blank.[3]


  1. ^ "Glossary – Blank solution". European Virtual Institute for Speciation Analysis.
  2. ^ "Quality Control Tools: Blanks" (PDF). EPA. Archived from the original (PDF) on 2013-06-13. Retrieved 2013-05-30. CS1 maint: discouraged parameter (link)
  3. ^ Coleman, D.; Vanatta, L. (29 October 2010). "Statistics in Analytical Chemistry: Part 40—Blanks". American Laboratory. Retrieved 16 March 2016. CS1 maint: discouraged parameter (link)