{{for|use in computing|Empty string}} A '''blank value''' in analytical chemistry is a measurement of a blank. The reading does not originate from a sample, but the matrix effects, reagents and other residues. These contribute to the sample value in the analytical measurement and therefore have to be subtracted.<ref>{{GoldBookRef|title=blank value|file=B00679}}</ref>
The '''limit of blank''' is defined by the Clinical And Laboratory Standards Institute as the highest apparent analyte concentration expected to be found when replicates of a sample containing no analyte are tested.<ref name="pmid18852857">{{cite journal| author=Armbruster DA, Pry T| title=Limit of blank, limit of detection and limit of quantitation. | journal=Clin Biochem Rev | year= 2008 | volume= 29 | issue= Suppl 1| pages= S49-52 | pmid=18852857 | doi= | pmc=2556583 }} </ref> ==See also== * Blank (solution)
== References == <references />
Category:Analytical chemistry
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