NIR spectroscopy is widely used in Quality Control laboratories in many industries. These laboratories require procedures to establish the number of significant figures and perform rounding of the results to be reported. This column discusses various approaches for reporting NIR results and the use of short term precision for rounding and reporting results.
HarrisDC. Quantitative chemical analysis, 8th ed. New York: W.H Freeman and Co, 2010.
2.
OliveriAC. Practical guidelines for reporting results in single- and multi-component analytical calibration: a tutorial. Anal Chimica Acta2015; 868: 10–22.
3.
ASTM, E29-13. Standard practice for using significant digits in test data to determine conformance with specifications. West Conshohocken: American Society for Testing and Materials, 2013 Vol. E29-13.
4.
MassartDVandeginsteBDemingSet al.Chemometrics: A textbook. Data handling in science and technology1998; (vol. 2). Amsterdam: Elsevier.
5.
EsbensenKHWagnerC. Theory of sampling (TOS) versus measurement uncertainty (MU) – a call for integration. Trends Anal Chem2014; 57: 93–106.