Round robin test

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In experimental methodology, a round robin test is a test (measurement, analysis, or experiment) performed independently several times. This can involve multiple independent scientists performing the test with the use of the same method in different equipment, or a variety of methods and equipment. In reality it is often a combination of the two, for example if a sample is analysed, or one (or more) of its properties is measured by different laboratories using different methods, or even just by different units of equipment of identical construction.

[edit] Purpose

There are different reasons for performing a round robin test:

• Verification of a new method of analysis: If a new method of analysis has been developed, a round robin test involving proven methods would verify whether the new method produces results that agree with the established methods.
• Verification of reproducibility: When a new experimental method is designed, a round robin test where different laboratories use the new method would verify reproducibility.
• Selecting a method of analysis: It may not always be clear what method of analysis should be used for a specific case. A round robin test involving the available methods will reveal which methods give satisfactory results. What method to use can then be decided on premises such as price and time consumption.

[edit] References

• IUPAC: Round Robin Test on the Molecular Characterization of Epoxy Resins by Liquid Chromatography
• NIST: Analysis of the ASTM Round-Robin Test on Particle Size Distribution of Portland Cement: Phase I
• Interlaboratory Proficiency Testing Program vs. Round Robin Tests