Blank ( solution ) - Wikipedia Blank ( solution ) This article needs attention from an expert on the subject. Please add a reason or a talk parameter to this template to explain the issue with the article. When placing this tag, consider associating this request with a WikiProject. ( September 2012 ) A blank solution is a solution containing little to no analyte of interest, 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. '' 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. References Jump up ^ `` Glossary -- Blank solution ''. European Virtual Institute for Speciation Analysis. Jump up ^ `` Quality Control Tools : Blanks '' ( PDF ). EPA. Archived from the original ( PDF ) on 2013 - 06 - 13. Retrieved 2013 - 05 - 30. Jump up ^ Coleman, D. ; Vanatta, L. ( 29 October 2010 ). `` Statistics in Analytical Chemistry : Part 40 -- Blanks ''. American Laboratory. Retrieved 16 March 2016. This article about analytical chemistry is a stub. You can help Wikipedia by expanding it. Retrieved from `` https://en.wikipedia.org/w/index.php?title=Blank_(solution)&oldid=791670545 '' Categories : Analytical chemistry Analytical chemistry stubs Hidden categories : Articles needing expert attention with no reason or talk parameter Articles needing unspecified expert attention Articles needing expert attention from September 2012 All articles needing expert attention All stub articles Talk About Wikipedia Deutsch Italiano Edit links This page was last edited on 21 July 2017, at 19 : 00. About Wikipedia

Question: what is the purpose of a blank solution in colorimetric analysis
Answer: to trace sources of artificially introduced contamination