Tag Archives: accuracy

Analysis of a Digital Pipet

Mechanical micropipets are commonly used to dispense small (μL) volumes of reagents.  A recent “Application Note” [Am. Lab. June 1999] contains the following data for 50 replicate deliveries of a reagent using a 5.0-μL micropipet. Average volume delivered = 4.967 … Continue reading

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What is the Difference Between Repeatability, Reproducibility, Accuracy, and Precision?

In an editorial published in American Laboratory (November 2000), Ira S. Krull states that in “any science, then, one must present at the very outset evidence of repeatability, reproducibility, accuracy, and precision (emphasis added).” Suppose you are preparing a manuscript … Continue reading

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