Examinando por Autor "Suárez Algarín, César Augusto."
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- ÍtemDeterminación de la repetibilidad y reproducibilidad del método ISO 9622 para la determinación del contenido de grasa en leche cruda en un interlaboratorio, bajo los lineamientos de la norma NTC 3529-2.Suárez Algarín, César Augusto.; Rubriche Cárdenas, Juan Carlos.In this work, the repeatability and reproducibility of an ISO 9622 standardized method that is used to determine the fat content in raw milk is performed. This study was carried out according to the guidelines established in NTC 3529-2: 1999, the data used in this work comes from an interlaboratory study in 6 company laboratories where the same method of analysis is applied, the results require data consistency tests graphically with the hyk Mandel statistics and numerical tests by applying the Cochran and Grubbs test, which did not produce atypical, doubtful or aberrant data. The results indicated that for the evaluated concentration levels of 2.04% (g / 100g) to 4.14% (g / 100g), approximately 95% of the results of two measurements on the same sample can be expected within a laboratory, difference in absolute value by less than r = 0.02% (g / 100g). While the expected difference between results from two laboratories differs in absolute value by less than R = 0.21% (g / 100g).